Slipshot have you contacted a lawyer about this issue? Was there anything noted about past problems on the disclosure form? What about the inspection report? Have you talked to any of the neighbors about the previous owners mentioning water issues in the basement or perhaps seeing foundation companies at the property? I know nobody likes to sue anyone but with this purchase just happening and finding water I would consult an attorney about going after the sellers, inspection company, and even the listing agent. If you are willing to spend 7k on B Dry perhaps having an attorney draft a letter to all three parties and doing some saber rattling might get you some resolution. I wish you the best on this outcome.