One other note--I don't know this for sure with regards to renters insurance, but I suspect that it's like auto or home owners insurance, where rates can vary widely depending on where you live. This is the result of natural differences (higher cost in regions of more natural disasters), manmade differences (higher cost in regions of higher crime, as well as in buildings that have more units, etc.), and legal differences (differing state laws affect how much they have to reimburse to cover various losses).
So if you shop around, find the best rate available to you, and then find someone posting a rate here that blows it away, it might be more a matter of the factors I indicated, rather than you getting gouged.