When I sold my Poprad 2 months ago, I had no less than 4 people try to con me with this scam. On each of them, I wrote them the following:

"Your conditions are acceptable with the following changes. I will charge you a fee of 25% of the remaining balance to handle your banking for you. I'm sure you can get a better rate from a reputable bank, but I operate out of a back alley and have a very high overhead. Also, since I do my banking with a reputable bank, I will not release either the excess funds or the bicycle until Wells Fargo has confirmed that your check has cleared, regardless of what type it is or the bank it was drawn on. This process will likely take up to a month. If these conditions meet with your favor, please respond in very kind...."

Never heard back from any of them.

55/Rad