Non-refundable deposit to make an offer?

[Justin Campbell]

Hello All!

I'm looking to buy a single family property for $90,000- gets 17% ROI and recent updates to major ticket items. The catch is the seller (FSBO) wants $2000 non-refundable to submit an offer. She said the reason was she doesn't want to mess around with people who are not serious buyers. Seems a little off to me, but as a new investor I'm in the dark. I've read as many articles as I can about it and it seems like this is more standard when it comes to Wholesaling. Can anyone offer advice on whether this non-refundable deposit is reasonable or not?

Thanks for your time!