Actually, Carphone Warehouse previously had the Google Nexus S selling for $313 (£200) not too long ago, but not surprisingly, they quickly sold out of the device. Fortunately, it looks as though they’ve been able to replenish their stock, and now it’s once again made available for purchase. Of course, the entire deal is even sweeter because it’s a SIM-free version of the Google Nexus S that they’re selling. Meaning, all you need to do is pop in your SIM, and voila, it should work with any GSM-based network out there.
source: Carphone Warehouse via Android Central