UPDATED: Since posting this deal, deanos has pointed out that the three pack of tapes may work out even cheaper (see post 11 for link and to give the man some well deserved rep). The only time it works out more expensive is if you buy one pack and pay P&P.
Sony 3 Pack 60 min DVM Premium with Free Head Cleaner = £3.58
Original Deal info:
Amazon are selling Sony 60min Premium MiniDV Tapes (5 Pack) for £6.18.
They also have the same pack with a Head Cleaner for £6.98.
Postage is £3.23, or free if you spend over £15 or are a member of Amazon Prime.