I bought mine from a shop called Franklins in Colchester, it's a family run business and they are very friendly. I think they have a few shops but all in the Essex/Suffolk area. Might be worth giving them a ring or an email to see if they can do a better price for you :-)
Thanks! The tardis is definitely one of my best quilts! And it's very well loved by its owner, which is all you can hope for when making someone a quilt!