Sorry, meant $ instead of £... I have seen a few prices much much higher from some smaller places (one Eastern European ISP trying to sell a /24 for $40 each),

Sorry, meant $ instead of £... I have seen a few prices much much higher from some smaller places (one Eastern European ISP trying to sell a /24 for $40 each), I guess trying to make a quick bit of cash.... but I think $10-$12 as you said is more usual for larger purchases.