If your thrift stores are anything like mine, they love using a grease pencil to price things. And if you are anything like me, you loathe how many amazing vintage finds seem utterly ruined by it!
I was told (by a thrift employee) that simple soap and water would take it right off. Wrong. So wrong.
Goo Gone! I love this stuff. Once, when I was a teenager who thought she was going to be a musician (hah!), I got sharpie, lots of it, off of a white electric guitar using only Goo Gone.
I've found the spray gel is slightly less greasy and much easier to use. Spray a bit on a dry paper towel, wipe in a circle, and the grease pencil comes right off. If it's a kitchen item, just be sure to wash off the Goo Gone before you use it. :)
It even works on vintage Tupperwear, you know that nubby texture? I scrubbed with soap and water for a half hour, threw it in the dishwasher, nothing would make that grease pencil come off except Goo Gone.
Yay! Thrifting is a lot less stressful for me since I discovered this. ;)