You could just pay recording fees. Meet the seller on the courthouse steps, swap the deed for the the cash, go inside and record the deed, and call it good.
I presume that you're not really going to do this, but you're wondering what other closing costs there may be. There aren't any other "mandatory" closing costs, but there is prudence, as Ron Thomas, who is always correct, points out. Everybody has an escrow company handle the money-for-deed swap, because there is a risk that when you hand over the money, the deed will be invalid; or, when you record a perfectly good deed, the seller finds that the cash is counterfeit. The escrow company collects the money and deed, gets the deed recorded, then releases the cash to the seller. Very convenient, very good system, very much worth the money.
The thing about a "title search" is that clear title affects the validity of the deed. A deed truly has little value without a title company's warrant behind it. When you (or your heirs) go to sell the property, they may find that you were just holding the property for some other owner. That would be bad, and they would have zero recourse.