Rares go for market price +IRL Cash.
You're account seems pretty good so I may actually advise against removing recovs/e-mail, or be sure to use a MM in trade. The most i've ever seen a RS account go for was a 138 Player Mod with all skills 99 but dungeoneering with 4B Market Price bank, for 4300$..your account may be around the 1000 depending on stats...If you get more specific I can give you a better estimate. And normally mills are at the least .75/M usually 1$/M
Well a safe place to do it is in the link in my signature, but you have to have purchased a bot first and pass fraud checks before you can access the marketplace. Since it came out, no1 has scammed anyone