Personally, I HIGHLY dislike eBay! There is so much "Auto-sniping" software in existence that it is essentially impossible to win something, unless either (A) NOBODY else wants it...or (B) you are fortunate enough to register your bid in the last nanosecond before the deadline...! Further, the average eBay seller is hopelessly ignorant about the details concerning his/her/its merchandise, so one has no real knowledge as to what is being sold...!
In fact, as a 78 colllector, I find that they are quite rare (and often wildly overpriced) in thrift stores...and too many mail auctions carry minimum bids leading me to believe the sellers are hoping to reach the financial level of Bill Gates!
When I was younger, there were a number of mail auctions which offered all sorts of 78's...and had affordable minimums, which enabled me to buy about 10,000 phonorecords, usually for a buck & change each...and thus have fairly complete runs of a number of labels...!
Surely large numbers of 78's haven't suddenly vanished from availability in the last decade or so...?!
Steven C. Barr