Auction flippers

[theshleps]

I bid on many auctions of signed cards that are on my want list. Sometimes I win. Sometimes I bid alittle higher than what I think is a good value and still get outbid and then a few weeks later I see the winning bidder selling the item on ebay for 2-3x the price they paid. Not only do I find it annoying, but it raises prices in general and makes it harder and harder for us collectors to pick up any of our wants. On alot of signed cards of HOFers (pre 1970) they have gone up anywhere between 300-600% in the last 2-5 years at least. It is great in terms of how much my collection is worth (I am sure alot of us have collections worth more than our houses now) but it makes it hard to add to our collections.
Am wondering what you folks think of this phenomena.