eBay bidders driving up prices again....

I have a stockpile of E body adaptors. They are going for about $15-$25.
Now that I have a MIG welder, I can cut a couple down and weld them back.

Up till about a month ago, the A/B body ones were going for $50-$70.
I got one ealier this year for $65.

Sometimes the heat of the auction makes people stupid.
I forget what the item was, but there were two or three of the same thing I was watchng. One had a buy it now of $69, and another got bid up to over $100.
WTF? Identical item!!!