It will be fine for resale, probably a plus as it would be one less thing a potential buyer would have to be concerned with.
If the seller doesnt do it before you move, my suggestion is to get a credit for the cost (it will be called a sellers credit to buyre's closing costs).
Lets say the cost of the home is $300k and you are financing 10% down, $30k. If you reduce the price of the house to $298 (assume the system is $2) then you only have to put down $29,800, a savings of only $200.
If you get a sellers credit os the $2k, then you spend $2k less on closing costs. Sellers credit is better if financing.