Yes, that would be my guess.
Mind you, I am sure that the product is real, but not how it is made, necessarily.
I spoke to a magician friend who hinted that this was very close to how it’s done.
Once you get the cellophane and box set up inside the bottle the cards slide in quite easily.
Secondly, the padlock will fit through the neck in one piece with the shackle open and some manipulation, but as soon as you close it , it’s not coming back out easily as the keyhole is at the bottom.
Ship in a bottle. https://www.wikihow.com/Make-an-Impossible-Bottle
Keeping the wrapper makes a bit more difficult, but gluing on the wrapper before cutting the bottom would probably make it easier and less likely to crinkle.
The trick isn’t new and confirmed by Jamie D. Grant who may have originated in it circa 2006:
“The deck of cards has gone in through the hole at the top of the milk bottle, the bottle hasn’t been altered in any way; but it wasn’t placed there by magic. It was set inside with patience, tenacity, and with a deep love for art. I like to think of it as the one secret left in magic that isn’t for sale. I hope that it represents the wonder that we’ve all felt at some time in our lives.”
Source: Anything Is Possible Bottle by Jamie D. Grant
The golf ball in a bottle most likely is a variation of the tennis ball in a bottle. Though far less so, they can be compressed, especially soft compression balls.
The description on the page the OP linked to states:
“The bottle is a completely normal glass bottle like any you would buy. It has not been sawn, cut, melted or altered in any way. Everything you see inside the glass bottle has been meticulously placed there by hand.”
A classic example of magician’s misdirection. By stating how it *wasn’t *done plants the seed of thinking that the bottle was somehow altered in some way. After all, magicians lie all the time. Drawing attention away from the fact that it’s clearly stated that it was “meticulously placed there by hand”.
Don’t want to go the trouble of placing each card in by hand? Glue the entire pack together and slice into strips small enough to fit through the neck. All the cards are there, just not in the original condition they began. It was never stated that they were in the original intact condition, just that “The deck of playing cards contains all 52 cards in order, as well as both jokers.”
My first thought was you wouldnt even need the cards.
a slip of cardstock with suitable printing/embossing could look very much like the edge of a deck of cards. With that in mind, a flattened pack could easily be slipped in and popped open without having to replace every card.
It would weigh far less. You can shake the bottle and know you’re not playing with a full deck.
He’s selling these things for upwards of $70. Playing cards and glass bottles are cheap. Masterful assemblywork is expensive.
If there were a way to do this inserting the contents whole and heating the bottle in a mechanical way with a ~20% yield, it would probably be cheaper than carefully building it inside.
I expect that you can both cut and weld the bottom of a glass bottle without heating the surrounding area very effectively using lasers. I don’t know if the business of novelty bottles with stuff in them is high enough volume to cover the fixed cost of the (expensive) laser assembly required to do so, but this is likely a simple solution with high yield and little painstaking assembly skill required.
All this speculation about how the bottle could manipulated gives me a chuckle and a yearning for the innocence of our youth. If a magician makes a ball disappear, a child would say “You have it in your pocket!”, but an adult would say “That’s too obvious, it’s can’t be true!”\
In both the links I gave above, the makers clearly state the cards were meticulously placed there by hand, but being too obvious, we refuse to accept it as the truth. 
I seriously doubt it, and I think it’s pretty easy to put the cards in the bottle. A couple of guides that fit through that mouth could make it very easy to slide those cards into the bottle. That’s the method used in a lot of magic tricks to insert things into hidden places, like cards back into the middle of a deck. On the other hand, it takes a considerable investment in the equipment to reform bottles and the use of such a machine will have a much higher cost than you may think.
Finally, if he was doing this by reforming bottles why hasn’t he put something in there that could not possibly have fit though the neck?
I want to clarify that I don’t really think he uses lasers. I was offering it as a possible way to accomplish the task, not as the most likely (or even as a remotely likely) suggestion.
I agree that he almost certainly reassembles the stuff inside the bottles.
That said, I’m not convinced it’s that easy or quick. Playing cards and glass bottles are pretty cheap, so either he’s making an incredible margin on these things or they take a lot of work to put together.
If he doesn’t cheat and puts all 54 cards back in the box without slicing them, I can easily see it taking several tedious hours. £75 seems fairly cheap considering that it included shipping worldwide.
I agree! Which is why it’s silly to discount a technique with low yield because he’d break a few bottles or burn a few cards. That’s way cheaper than hours of work!
He’s not mass producing these, they’re made to order.
"WHAT ARE YOUR DELIVERY TIMES?
My Impossible Bottles are all handmade to order, and I usually dispatch within five working days. At busier times this might be longer. If you need one quicker than this, please contact me first."
Source: https://www.impossiblebottle.co.uk/faq
But, but, it’s not worth the time! It’s a hobby for him that he perfected over the past 10 years. Why do magicians spend countless hours perfecting one trick that will be performed for free? He’s a magician or at least a formerly aspiring one.
People build a ship in a bottle, then give them away. Why? It’s the challenge and knowledge that someone appreciates their work. Even better if they wonder how the “impossible” was done.
Spend some time and read the FAQ and Blog on his site. Go back to your childhood and put away your presumptions of what should and shouldn’t be. The creator of the “Impossible Bottle” would love this thread as posters refute the obvious and speculate on how it could be done.
"Harry Eng was a master impossible bottle maker and all-round remarkable human being - more on him another time.
I read about Harry Eng’s impossible bottles, tried to make my own, and the rest is history. Ten years later I’m delighted to be still creating and shipping my bottles all over the world.
Unfortunately, now in my late 30’s, I no longer find the time to practice the amazing hobby of magic which brought me so much pleasure in my younger years. However, returning full circle, I have Paul Daniels to thank for introducing me to a world where the most astonishing feats were made possible, for the amazement and enjoyment of others. Making impossible bottles is my way of continuing that in some small way."
Source: https://www.impossiblebottle.co.uk/post/paul_daniels
Yes, it’s possible that he’s making them the hard way as a hobby, and selling them at a price that’s fair, considering the amount of work that goes into each one. It’s also possible that he’s sawing the bottoms off of bottles, gluing them back on with glue that matches the index of refraction, and selling them at a ridiculous markup for 15 minutes of work each. As for why he wouldn’t do something “more impossible” if he were doing it the easy way, it’s precisely so that he can claim that he’s doing them the hard way.
We don’t know which of the two cases is correct.
It’s more likely that he’s making these the hard way without cutting out the bottom of the bottles.
Isn’t misdirection a key aspect of magic ?
I accept that in principle. However given the large number of others the same thing and more https://www.google.com/search?q=impossible+bottle&oq=impossible&aqs=chrome.0.69i59l2j46j0j69i60j69i61j69i60l2.3583j0j4&sourceid=chrome&ie=UTF-8, which is more likely. Skill in placing everything by hand or skill, knowledge and tools to the do it the “easy way”. 
By the way, if you want something to really scratch your head over, check out the middle bottle by Harry Eng: http://blog.alism.com/harry-eng-impossible-bottles-how/
Absolutely impossible! Unless you watch this video. 
Absolutely! I highly recommend An Honest Liar and Penn and Teller videos where they talk about the psychology of magic.
I forget the exact joke about the disappearing elephant, but it’s along the lines of:
Two men push a huge empty crate onto the stage, the elephant steps in and disappears. Then while the magician takes his bow, it takes four men to push the empty crate off the stage. Hmmmm???
At some point, when you say “this isn’t cheating”, it’s going to come down to just what you’re defining as cheating. Like, one of the comments suggested that he used a flexible material like rubber, that looks like wood. A relative of the guy who made it got indignant at the suggestion, and said that of course it isn’t true… but of course, it is. One example of “a flexible material like rubber, that looks like wood” is, in fact, wood.
Except that I don’t think that method could be used for that middle bottle, anyway. You can reshape wood considerably, but you can’t change its volume enough for that block to fit through that bottleneck.
I’m loving this thread because of all the interesting out of the box theories, but I kind of feel like I’m proving there’s no Santa. :eek:
Here’s a video of the bottle in the OP: https://www.youtube.com/watch?v=oRJ1Lx9Z-vc
And a video, actually just pics of how it’s done: https://www.youtube.com/watch?v=GmgGPhBzY7Q
Now, just gotta find that woodblock video.
Edit: Ahhhh…Sorry. I hope you didn’t click on the first link before I fixed it!