Although I am primarily a postal history collector (that is, covers, not stamps), I continue to find
ebay to be a "target rich" environment for shopping. I rarely go a day without encountering an item which would fit into my collection when the budget allows. And I've spent three days at a major show with virtually no success.
I'm also solely a buyer at this point, although the itch to become a seller often arises...
I would estimate that 75% of the $dollar value my purchases (mostly in the $10 - $50 per item range) are from
ebay. About 10% come from Delcampe, another 10% from dealers at shows, and occasionally a high dollar item is purchased from a major auction house. I gladly play the field.
Some of the items I collect: mostly ephemera related to the US post office, have been acquired solely from
ebay. These were items like Postmaster appointment commissions and Account Books which I had never seen through traditional paper ephemera sources. In this case,
ebay opened an entire world of opportunity to me.
I agree with the sentiment that the loss of wildcard searching with
ebay was a inconvenience, but its impact simply forced me to break my searches into a series of date related searches to find what I was looking for. I doubt
ebay saved many CPU cycles from me.
I also agree that both
ebay and Delcampe have way too many inexpensive but overpriced listings that just go on and on and on without possibility of sale. Why anyone thinks that offering 50 individual listings for copies of the same contemporary US commemorative stamp at $0.99 will make them rich is beyond my comprehension. I would like to see some form of a more "expensive" listing fee approach to limit this behavior.