I don’t know what you paid for your Le Creuset cookware at Amazon, but I’d like to suggest that you look in TJ Maxx, Ross Dress for Less, and Marshall’s. I’ve just bought a 4 ½ quart oval cast iron enamelled roasting pot for $30.00. The brand name is Well Equipped Kitchen. The only flaws I see are a couple of chips on the outside of the pot and lid. Everything else looks fine. You can get great deals if you can overlook cosmetic problems.
Zippo lighter fluid. I use it every day to remove adhesive. Used to use Goo Gone, but then I needed something to remove the Goo Gone. I’ve even used it to remove the residue from potato chips that gets left behind on the Rubbermaid container…wash really well after using! Acetone is great for removing Super-Glue residue, but it can harm a lot of finishes on wood, and even melt some fabrics.