The problem is:1) Some title problems are not just liens: they may be someone else claiming that *they*, not the seller, have title to the property (e.g that it was sold to them previously; or that they are claiming by adverse possession). Those problems may not be resolveable in your favor; or even if they can  be, without a good deal of litigation.2) Any liens could exceed the purchase price in theory, and so not be clearable they way you describe.3) If you don't find out about the problem until after the closing, then if the seller refuses to repay you, you wil have to chase and sue them for the money.It is not advisable to do this until you are in a position (and getting such a good deal) to potentially pay out of pocket and/or engage in a lot of litigation to clear title; you can't 100% rely on getting it resolved by credits or reimbursement from seller.