It's a thing I have noticed really recently which is when I do baltop it shows the balance for some people but when I try to sell something to them it says they have no money. But on baltop it says they have money D:
An example is Real_FitzV1 and Kingkong1st.
Tell me if your want pictures

 

I take it's just you or the price they've set is way too high.

EDIT: Make another post if there's still some kind of issue with this, these are my only thoughts and this should be resolved. so Resolved.