They advertise a promotion on 1-60 power leveling at $169.. But what they don't tell you is that the accounts they power level have been compromised and/or banned.
Which means, they'll loot your characters dry then change the password or they'll get your account banned for using a power leveling service. As far as gold goes it's not the cheapest because they probably get it from another company -- But the gold does get delivered. Power leveling works out once in awhile with them, so if you have a blank account you can't really get hurt having them power level you for so cheap.