I've been sniped a few times on ebay; there are people that bid just to jack up the price. I keep a 'naughty' list, and I raise their cost anytime I see them,lol.
I do get some good deals tho. I buy older test equipment by HP and others, that I'm familiar with.
I snagged a 50v 50A hp power supply, for 50 bux. It cost 100 to ship, and it's so heavy, I can barely move it. It takes 220, so it can only be used in two places. This house has 2 220 plugs for heat, they used in the 60's, apparently. One heater is still downstairs, If I ever need it. I can only imagine the cost for running that. I have gas/hvac now, thankfully.