First of all, you have the opportunity to review how much you put an item in for BEFORE you open the shop since it displays in the chat saying: Added one bla bla for x$. You can also hover over the item and make sure you put it in for the right price. I have NEVER had a shop glitch, so you probably listed something else for 4m, so then you just accidentally listed it for that price.

Secondly, 4 billion has three more 0's than 4m, so how did you fuck that up? Not even 40m or 400m.

First of all, you have the opportunity to review how much you put an item in for BEFORE you open the shop since it displays in the chat saying: Added one bla bla for x$. You can also hover over the item and make sure you put it in for the right price. I have NEVER had a shop glitch, so you probably listed something else for 4m, so then you just accidentally listed it for that price. Secondly, 4 billion has three more 0's than 4m, so how did you fuck that up? Not even 40m or 400m.