PayPal has problems out the wazoo regardless of which online store you're buying from - stuck/hanging authorizations, overriding shipping address with old addresses, taking weeks for refunds, mysteriously preventing orders, etc. It works fabulously most of the time, but those times when it doesn't work are really frustrating. That's a PayPal issue though. I despise scammers, and I have seen nothing "scammy" about Renderosity. Technical problems happen all the time online. It isn't appropriate to label Renderosity a "scam" because of honest technical problems that they'll happily remedy when advised of them. Whenever I've had a problem I message them, and they get it fixed in a reasonable time (a few days or less).

If you want scams, look at one of the other really, really, really, really, really big stores that sells Daz products, which will remain nameless here. Creating manipulative devices, using psychological warfare, exploiting customers' innumeracy, failing to deliver what was promised, encouraging multiple purchases of the same item, arbitrarily taking back "free gifts", offering daily "sales" whose pricing schemes require deep study to comprehend, refusing to allow customers to warn fellow customers of crappy/broken products with a ratings & review system, and censoring anyone who will tell others about this is the very core of their business model. I'll take an occasional PayPal blowout at an honest site over that black hole of business ethics any day.