I need a cart system and/or checkout that works with Verisign. My client doesn't want to use Paypal for these systems, so I am looking for a similar setup. Basically, I have created the site, with full products listing...just need somewhere to send the information for a secure cart and checkout (like PayPal does). I would create this, but the client doesn't want to pay for it, and wants something free or cheaper?
Any ideas? Any experience?