I've been doing cheque back first with the link and twice with one stop phone shop over the last 3 years and have never had trouble, had to wait 60 days once for the money but it always turned up. As long as you stick reminders in outlook and send off bill exactly when they ask it is fine. Have always used registered post though cos I didn't trust them. Is very easy for smaller companies to abuse. I think both e2save and osps are owned by carphone warehouse so are as legit as you can can these days.