Has anyone ever used Shopper Systems?

Generally speaking, any of those sites that charge you a fee to join or a monthly membership fee are a scam. It's possible that the charge they made is just a temporary hold on your account to verify that the card you gave them was valid. I would monitor your bank account closely for the next several days. A temporary hold will usually just drop off of the account in two or three days. If it doesn't, and the charge posts to your account, you will need to contact your bank and initiate a chargeback on the transaction to get your money back. Make sure you cancel the trial membership before the 14 days are up so they do not continue charging your card.

Nope I do not use these systems, now there are some legit ones but some you should not have to pay for. You will find legit ones where you will have to pay as well, but I am sure that it is not that much money. I am sorry that you got scammed that is so wrong of them to do that. I have to say though they have small print that has so much stuff in it that you cannot even read it, because it is too small. Yeah never use that again. I am sorry to here this.