published prices are $200 per foot to raise, $500 per hour barge fee, then $X/ft for equipment fees (depending on if its a forklift, excavator, etc.), and then there is the disposal fees, and any surcharge the salvage company wants to charge.
The law (at least in florida), if your boat is assumed abandoned, the state has the right to have it salvaged, and you as the boat owner, pay any and all fees.
marinedebris.noaa.gov
However if you have an at-risk boat, and you contact the authorities that it is at-risk, obtain the appropriate permitting and can get it towed to an appropriate turn-in site, there is no cost to the owner of record. The state will then haul it out and dismantle it.