Google Checkout is out. Both the merchant and buyers have to reside in US for now. The cost is 2% and 20 cents by transaction. Cheaper than PayPal, but you can't use Checkout to transfer money from one account to another one. May be soon.
Checkout have a nice integration with Adwords users too. For every $1 the merchant spend on AdWords, they process $10 in sales for free.
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