I know about the disadvantages and that You must recalculate the price before bidding, but there have been some times when You just get lucky and it is worth all the effort. At least if there is a plethora of equipment that is auctioned that You could use. Then it is more likely for this to turn into a bargain for You. Well... at least the shipping is somewhat amortised.
But yeah, You're right, that in most of the cases when it's only two to four things that You want and half of it don't get for reasonable price, shipping just kills it, if VAT + fees hadn't.
I guess, with broken/fixable stuff, there is more of a chance for me (as I don't mind love fixing test equipment and understanding more about it on the way).
Sadly, I haven't yet found any equipment locally that I could try to repair.