I think the customer was a jerk who was trying to wear you down to a lower price, too. The store is taking care of the tax is perfectly understandable - your price is $460 total - give us $460 and go away.
Alright, who let this guy in?
Some nut who wants to start a string of guitar puns.
So, how much for just one rib?
That reminds me–Marshall dented the fender on my pickup. I wanted to wring his neck and throw him off the bridge.
So, wait. When you say $20 tax included, that’s really $18.70 plus tax, right? So then we add the tax, because that’s included (which means you have to give it to me otherwise you’re definitely not being fair), so what you’re actually betting is $21.30, or… ??? 
And a sip of cola.
I agree he was intentionally misunderstanding to try and get you to lower the price. But sheesh - he walked away from a $900 guitar for $460?
A flat tax? That’s sharp!
Do let us know when he comes back (bet he waits in his car for days til he sees the first sales guy come to work).
The puns are getting appalling.
This thread needs less pall.
Is it more pall than you can bear?
Noted.
These puns are striking a bad chord with me.
Hey, they’re only having a bit of fun - take it down a peg. On the scale of things, this is very minor.
Is it A minor chord?
Can you change a hundred?
Huh?
No, he didn’t.
The guitar he’s trading is, according to the OP, worth $350. That $350 is part of the price he is paying for the guitar. The fact that he’s giving the store $350 worth of guitar instead of $350 worth of money does not mean that he’s getting a $900 guitar for $460.
By your logic, if i trade a five-year-old BMW worth $25,000 in an even swap for a new VW Jetta worth $25,000, i have received a free car.
You’re right - sorry, I must have skimmed over the part about the trade. I was thinking what a master of a negotiator this guy must have been . . . :smack:
I’m actually a little annoyed at the OP. This customer walks into the shop, and they settle on a price for him to come back the next day with his trade in. He comes back and the price isn’t what he was told. He hesitates because he feels like he’s been lied to and waits another couple of days. The third time he walks in a different guy gives him yet a third answer. Fucking hell, this guitar shop is worse than my cable company.
The OP is pitting the customer for the OP’s failure to offer an understandable price structure.