Guitar neck repair modifications such as refretting involves removing old, worn frets using heat to minimize wood chip-out, leveling the fingerboard radius, installing new, slightly larger tang fret wire, and leveling, crowning, and polishing the new frets. This process typically costs $200–$400, often upgrading to stainless steel or specialized fret wire for improved durability and playability. 

I use Dunlop Accu-Fret® fretwire. The fret wire manufactured from a durable nickel/silver alloy and delivers a warm and clear tone—the preferred brand for guitar builders and repairmen worldwide.