Or any make up and accessories brushes brush holder etc for a cheap price
my team mate had one and she said when she turned the key to expand it a lil all you feel is like pressure by your nose
Most of the expanders do not touch the roof of your mouth, so you should be fine. The RPE (expander) will feel very bulky and annoying at first. You will talk kind of funny, but eventually you'll get used to it. The process of cementing it on might be a little uncomfortable, but after that it shouldn't hurt at all. Good luck!
Idk I want to find out more