Vinyl Stickers

I've checked a couple companies online, and the cost for fullcolor (spot colour not necessarily cheaper) window vinyl stickers starts from around 50 £ for one A3 and then about 15 per extra A3. Other options may be buying empty vinylstickers and screenprinting logos on them (extra work, but should come cheaper). Or there is the possibility to get sticker-type clear material printed in the print bureau here in Camberwell, with the material bought form the shop. That is however only available in A4. (have checked online, and no company seemed to supply a3 inkjet selfadhesive clear material.) Plus it has got a rather cheap plasticky look and feel to it.