If you get the boards for free and are willing to screw up (it will most probably happen, at least the first time), then, I think it's a great idea to try and attempt to solder a new socket in. I advise you to try and choose the cheapest possible sockets, within reason, obviously. If you're getting them on eBay for £20, chances are the seller is sourcing them for much cheaper, so, find your own cheap source. If you don't mind "investing" on the sockets and losing some money, I don't see why you wouldn't attempt this kind of repair. I wish I had the time to do it. If you do this enough, chances are, you'll succeed and it'll get easier and easier. Someone who makes no mistakes is someone who never tries something new, so, by all means, go for it. I think it's silly when people tell you you shouldn't do it just because you don't know how to do it. Doing it is the way to learn it.