Laughed at the stupidity of egayers and sellers.
2nd hand speakers from the UK seemed to be around £190 each on there. Or around £140 from your local useless friendly dealer....
Apart from some sellers inflating prices higher than retail, the logic behind some Ebay buyers has always confused me.
A few years back I was after an Alko hitch lock for the caravan. You could walk into any caravan shop and buy one for around £90, but I thought I’d have a look on Ebay for the same brand new locks out of curiosity. People had latched on to one particular seller and were bidding them up to beyond the shop price, whereas I found another seller who I’d purchased caravan locks from before and hit the buy it now for £72.
It’s a strange world we live in. 
Despite their historic attempts to prevent it, shill bidding is very much still a thing. Not only does it increase price, but also impacts positively on the search order displayed, plus puts that scare into buyers mind that they must bid now.
I've won a surprising number of my own auctions in the past

- this isn't necessarily a bad thing (for the seller), as it generates a higher base price for subsequent auctions.
As a buyer, there are bargains to be had, but so many simply believe Ebay must be the cheapest, and only bother to look there out of laziness. Usually, like Amazon, its not the cheapest, but offers convenience* for busy people who CBA to shop around.
*Not withstanding your average small scale Ebay seller always ends up in hospital, or has an emergency, or the dog ate their homework, or any other excuse not to get off their fat arses to post the item.