im not sure about fewer game for sale, but there are many more places to sell
most people used to use ebay, or a forum. but now we have gumtree, and a few Facebook pages (some not even pinball related ) . it would be hard to follow everywhere
I have a customer who has his phone in his hand at all times. As soon as he receives notification from one of the various sites like eBay and Gumtree, he literally buys any EM if it has a BIN price he likes.