storing spuds

due to the floods i lost all my spuds and have been told by a freind who runs a green groucers that a sack of spuds will hit about £12 a sack . :?  :cry:  was wondering if i was to buy a few sacks before they shot up is there any way that i could store them with out them growing . mums says they use to use a clamp  :?:  :?:  any ideas any one
your bgb