You have to do a lot of trade through them to get lower fee's, I think the first level is £15000 a month, and thats not even much of a discount.
Monthly Received Payment (GBP) Fees per transaction
£0.00 GBP-£1,500.00 GBP 3.4% + £0.20 GBP
£1,500.01 GBP-£6,000.00 GBP 2.9% + £0.20 GBP
£6,000.01 GBP-£15,000.00 GBP 2.4% + £0.20 GBP
£15,000.01 GBP-£55,000.00 GBP 1.9% + £0.20 GBP
above £55,000.00 GBP (GBP) 1.4% + £0.20 GBP
There, thats from teh link...was a bit wrong...but it does go to £55k and over!