Still debating whether to replace the large front windows that are cracked and fogged up inside. Big expense, but it's a very visible window, first thing you see when you walk up to the house.
Some of these double-pane windows came with lifetime warranties. See if you can spot an installer or manufacturer's name/sticker on the track side of the frame, or embossed in the spacer between the 2 panes of glass. As the new owner of my current home I was able to transfer the warranty for $50 and get several fogged double-pane units replaced.
Depends on how the neighborhood is and how you plan on selling the house. Sounds like it needed work and you did some of the needed work. Not sure what it looks like now. ...a fixer-upper or move-in-ready? If it's more than a fixer-upper, and not in a neighborhood where it will sell in short order, and you can't get the windows replaced under warranty -- get a quote at least to see what kind of money it will take. Appearance from the street is often what sells the home to a prospective buyer.
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Just had another thought wrt the selling -- don't discount marketing the home to the neighbors (via word of mouth or flyers in their mailboxes) even before you list it with a realtor. Neighbors often might know of a friend or family member who'd like to move into their neighborhood.
omni