Since you're relatively new to RR and trading, don't be offended if people ask for personal info (i.e. Address/Phone) and want you to ship first. Only give the info via PM/E-Mail, don't post it in public.
Also, if somebody with like 2 Heat evals tells you that you need to ship first, I would tell them to "Get lost". Do a cross-ship in a case like that. 10 evals and up I would expect you to ship first if they have all Positives.
One more thing, not to discredit eBay evals in any way, but I don't count them for anything. I only use
Heatware or
Beerology. The reason being, these two evals systems are heavily monitored by
Troll Hunters and you can be helped easier if your deal goes bad. eBay isn't going to help you one bit really.