Asda do pretty good ones, but to be honest, they're all pretty much in the same area of price whoever you get it from(big name stores that is).
My concern would be whether you could get a signal. UNLESS you are connecting to a main aerial, get the best (one with the highest gain you can) indoor one you can. I made the mistake of getting the least expensive I saw because it assured me it would be fine.It wasn't, nor was aerial number two, or three, though I can get some channels with three. The joke is I'm twenty miles from the transmitter and the aerial in in line of sight. That one cost me £30.00 as it is.