I have read quite a bit on the forum about shopping cart (Mals / Pay pal etc.) And I gotta admit I'm curious about what you are all talking about, But, - my site is not for selling things, and it was never designed that way, I'm a pure hobby (WP) user.
What I was wondering is if its possible to set up a dummy shopping cart, OK it may sound stupid, but its just so that when I see people posting things about it, I know what they are talking about, I don't actually want to sell anything which is why I haven't tried setting up a Pay pal account, (although I am a registered user of Pay pal for paying off things on e-bay),
You can set one up with any of the above for free. Whether you sell anything or not does not matter. However, I would also like to set up my own cart where the "products" are sent to another page in my site.
Sandbox is fairly straightforward to use. It isn't there to ensure you don't sell something to a casual surfer at all! Many sites would love to have casual surfers buying things!
It's designed to let you figure out how to set things up without using your live PayPal account. Simply put, you create a non-working PayPal account i.e a ficticious one, and use that for dummy transactions. Works well!