how do you know it was shill bidding?
I'll give you three examples:
1) I bidded on some nice compomotive wheels and tyres, there was quite a lot of interest up until it got to around £375 then it was just me and another bidder going higher i copped out at £405, they sold for £415.
A week later the same wheels and tyres were up for
£425 buy it now from the same e-bayer, i emailed them and asked them how come they still got them and they replied the buyer didn't want them cause his mrs had bought some else where, a lightly story imo.
2) I have two Trac edge tyres which are quite hard to get hold of now i wanted a set and one came up on Ebay, it was at
99p no bidders, i knew i wasn't going to be at the end of the auction so i bid what i thought it was worth £30.
I lost the auction to another bidder with zero feedback who won it for £31 and the week after it was back up for sale by the same ebayer who listed it to begin with!
3) Again i new i wasn't going to be at the end of the auction for a bumper i saw, it was at 99p no bidders, i put £25 on it, and i won it for £25, however it was bidded up to that amount by another ebayer with zero feedback with no other bidders bidding, and you could see what he had been bidding on all types of landrover bits and pieces, probably all his mates if it were not the same person!
Thats why i think i was shill bidded or maybe i was just unlucky i dont know but i dont seem to have issues like this with other stuff i bought from ebay.