You may want to take a look at CDG Commerce. They are offering a great new promotion for internet businesses that features very low pricing and some of the best features in the business.
Take a look at the promotional link:
http://www.cdgcommerce.com/cdg2005promo/
You will need that link if you want to apply with the special 2.35% + 0.35 per transaction rates.
With the service, you receive access to the ground breaking Chargeback Defender, feature packed Merchant Portal, FREE FraudGate fraud protection, and much more.
If you have any questions about the service, please feel free to PM me or post here and I'll gladly assist you.