I owe approx. $30,000 in credit card debt, how much will it cost to consolidate it?

I became disabled in 2005 and racked up approx. $30,000 in credit card debt. Right now im on social security disability. Can i consolidate this debt? How much would it cost to do it? Since it's all gone to collections already, wouldnt i be able to pay much less that what i owe to get rid of it? And how much do those credit consolidations cost to do it?