I've had this in a drawer for ages, seeing if anyone wants it before I throw it out. Free but pay for postage.
It's this / second link. It's from Three Mobile (UK vendor) and it's a little fiddly to get working, so this is for techy people only. No tech support provided, I don't remember how it works anyway. I'm sure I had it working on 2degrees though. Can do 7Mbps apparently, which is fine for most stuff.
Post below or message if you'd like it. I'll reply some time tomorrow. Priority to anyone who can pick it up from Johnsonville, Wellington to save me going to the post office.