on-line shopping cart services

Hello-
I work for a small nonprofit and am looking for recommendations for an online shopping cart service that allows donors to manually enter the amount they would like to give.

We already have a service where we manually process credit card payments and can stick with it to save money if necessary.

We don't qualify for a paypal merchant account and don't want our online donors to have to sign up with paypal in order to give to us.

Any feedback on this would be greatly appreciated!

Thanks

Typically, a shopping cart is used in situations where someone might purchase multiple items in the same visit. This is often merchandise, but could be a combination of things like a membership, an event ticket, and a t-shirt.

If all you need to do is accept online donations, there are lots of options. Search TechSoup for the words "online donations" (without the quotes) and you'll find several articles and discussions. Here are a few:
Online Donations: Sorting Out the Chaos
Selecting an Online Donation Tool, Part 1
Selecting an Online Donation Tool, Part 2
Discussion of alternatives to PayPal

On the other hand, if you really want a shopping cart, search TechSoup for those words.

Robert