Don't use gox. You don't have to use those markets either. There are others or you could buy from the forums here, just use a trusted escrow and you should be set. You might be able to find a better deal here than on those platforms too.
Preev is a average of a handful of the major exchanges if you want to get your price from there:
http://preev.com/btc/usdAs of now I have no plans to invest in BTC, I prefer to mine since there's no risk (I certainly don't know enough about crytocurrencies in general to dare wagering money on it.)
But I just want to know how much I should expect to sell the BTC for at the current market. Do you not sell BTC directly to a market? Do you have to sell directly to other people (can you detect my level of cluelessness by now?

)
If you generally only sell BTC to other people, then is the average market worth what you sell for?