Lately i've been browsing some Reseller at some semi-big companies, and what shocking me most that they only accept credit card, no bank transfer and paypal. when they only allow credit card to do pay them with it they could rip you off? is it worth the risk to do that?
How can u be sure they ain't scamming u?

Thanks in advance.

I see most providers accept Paypal. If they do not show on their site, just ask!
If you don't trust on your provider, you should not go with them.