For the record, Gunbroker never even replied about the shill bidding report.
I reported once and here is their response in italics....along with my original report to them. Basically the seller had his wife register an account and he uses it to bid up his own items. He lists a lot of MAC items so hits home here.
GunBroker.com Support (GunBroker)
Jan 6, 2022, 5:00 PM EST
Many large sellers will have more than one item and will relist an item to create a new listing for the additional item. We have investigated and show no unusual connection between buyer and seller.
Thank you for using GunBroker.com.
Original Reported
Dec 28, 2021, 12:04 AM EST
I usually don't say anything about what other people do on the auction site but this one is crap because he is bidding up his own items and I only noticed it when I checked to see how high the bid is today.
I have sold many times to the user XXXXXXX. Item linked below, but if you look at his bidders, the user XXXXXX is also him. It is just registered under the name of XXXXX. See the below email from when I blocked XXXXXXXXX (under his old username) and he has another account and won the item and then asked me to send it to the address registered to the XXXXXXXX. His real name is XXXXXXX
now he is doing the same thing with this itemhttps://www.gunbroker.com/item/919