About six weeks ago, on gunauction.com, I found an auction for an MP5 Flemming sear gun for sale for $17,000. Maybe this seller was brain dead, the listing was a scam, or possibly this gun was a fundraising effort by Mayor Bloomberg for Everytown.
I called the seller, and it sounded real sketch, with the caller saying the owner wasn't here, but he keeps it around here somewhere and if I wanted to buy it. LOL.
That was my only experience on gunauction.