It depends where you are and what currency you're talking about. You're in the UK, so it's safe bet you're working in pounds, in which case, as far as I know, a lot of surgeries are less than 2k per eye. I don't doubt there are places that do it for that much but I think it's not that wide spread. My friend who had his surgery paid £1250 per eye, if I remember correctly (or £1450) and had the operation it in...umm, Manchester or Birmingham - one or the other, I forget. At any rate, it was quite a good clinic. And from his research, prices could start at something like 700 or 900 but a thousand something was more common and also got you into more reliable clinics.
But other than that, you're correct - it is a lot of money. You could, if you wish, try having a surgery somewhere abroad - prices could be as low as £300 or so, however, it's, you know - abroad. Whether or not you're willing to go the extra length (literally) is up to you.
But apart from that it's a sizeable portion of money. And glasses do work - have done so for quite a while now, so people could generally be happy with them. I am happy with mine. If I had a couple thousands lying around, I would probably use them on something else myself. Yeah, I am thinking of eventually getting the laser surgery but it's not a priority.