Here are my 2 cents
1. This website has enough references on the web going back a couple of years. People order from them and get what they paid for, just google
2. The "secure thing" (https) is not implemented since they dont care IMO. They've been selling this tool for years and dont want to invest any money, if it works - dont touch it kind of approach. They haven't changed their design for ages too
3. If you're scared that your personal data will be leaked - it's too late, your data is everywhere. Yellow pages, local county website, etc. I get mail from all kinds of businesses/churches/whatever and they all can see my info freely on the web.
4. Go ahead and order. You can be smart about it - use a credit card, preferably the one that allows you to create a virtual cc number or has the ability to lock it. Worst case scenario - dispute the transaction. Done it thousand times, there's literally no problem to dispute it if you dont get what you paid for OR if they use it for fraud. Most banks have the dispute option online, others are 1 phone call away.
Lemme know if you need any tech help