Red you nailed it. See it on eBay all the time. Ebay has removed a lot of access to bidders names these days and makes it hard to catch but it is happening.

One of the most annoying I have ever seen at a local house here in Va, I bought a gun from GB and arranged a local pickup. The gentleman said he also had several going at a local house. So I met him there for the local pickup and stayed for the auction of his 100 guns. I bid on a few early before I realized he sat in the back row and bid on every single item until it reached his reserve. I left after the first 20 items.