PayPal may take a cut, but its really not all that much considering what costs are involved in setting up a traditional credit card merchant account with per transaction fees,etc.
Plus as already said, there is Western Union bidpay.
I JUST WANT TO HAVE A WORD OF CAUTION WITH THESE.
This probably doesnt apply to [words=http://www.mattersofsize.com/join-now.html]MOS[/words], since you wont be ripped off. However, be careful when using the payment functions on Western Union and Paypal when using a bank account transfer. Western Union treats all transactions as cash money wires, even when you use a credit card. This means if there is a problem, you cannot dispute the charge with your credit card company. Its treated as if you made a cash advance ( plus it could also be suject to cash advance fees). Paypal is usually good from my experience, especially when using a credit card. I'd be a little more cautious using your bank account or even a Visa Check card, since it offers less protection than a regular credit card. Paypal does offer optional insurance and is even good if you dont buy it.
I have been burned for a lot of money using Western Union before on a fake Ebay auction for computers, so I thought I would add that in.
Also, DLD, I just thought of a couple business ideas that you may want to look into as far as getting more sales and offering more payment options as well, but I will send you a message later.
Edit: I just looked and noticed there is already an option for joining with CC through IBill