If the resto was done right (if the tech used quality parts, and didn't cut corners) than it could be worth more IMO.
But if it's all hacked up, someone competent will have to take the time to make it right again, and the set won't be worth much anymore.
But there's nothing like finding a set that has NEVER been opened, or has only had some tubes changed out. Sure, it'll be a project to re-cap the damn thing, but at least it's a prime candidate!
I would pay more for a properly functioning, non-original set than one with a vertical burn line and a smoked flyback because someone decided to keep it 'original'. (as long as 'properly-working' does NOT mean a color Samsung in the chassis' place!!!
)