I used to enjoy going onto
ebay / stamps and viewing offerings sorted by Highest prices first and seeing all the rare stamps I can appreciate but never afford. Yes, there was an occasional Elvis FDC that someone thought was worth a ton of money but, for the most part, there were plenty of rarities to view. Now, about haft the high priced material is junk. Someone was offering a 3c used stamp from the 1930s for $47,000 and a Canadian seller was offering a cut square from the 1960s for $71,000.
ebay seems to be happy collecting their posting fee for these items but I hope nobody is cashing out their life savings and buying this material. For the most part, the stamps are worth far less than the shipping cost! Free enterprise at its worst.