I like info products but - generally - haven't figured out how to reach the markets where buyers make no-brainer decisions. Must re-investigate!
My ebay/Amazon "stuff" is a bit like chatteling except the products are bought in, so the sales page is created once and lasts until either I can no longer get the product (rare) or a competitor buys a truck load and undercuts me. Fingers crossed that doesn't happen much as my products tend to be very niche.
A lot of the stuff I sell, I'd no idea existed before going into this market
Ebay's advertising suits me - pay more if it sells, otherwise no money changes hands.
But Amazon is more hands off and usually sells an order of magnitude more than ebay. Which is nice as I just bundle 10/50/100/200 of an item and let Amazon do the shipping and customer service.