This is a simialr deal to the one from Expansys BUT there is a current HP code which brings it down to £299 and quidco gets exactly £20 off the ex-VAT price (I haven't included either in the list). So £279 for the WWAN version of 311c.
HPVCC10ALL is the 10% off code and Quidco is also giving 8% in conjunction with the voucherI think ?!
So if you want WWAN then it is just a little cheaper than getting the module and aerial from Ebay if you need it. (£22 for module and £6 for aerial).