You can get a pair of std Blum hinges on the evil bay for fo well under £4 delivered free. If you are thinking of replacing all though I would splash just a little more and get soft close.
If they weren't so cheap I'd send you a pair but will cost me more in postage.
When I did my last kitchen I bought 40 pairs of soft close from an ebay dealer a lot cheaper than I could buy at trade. :shock: