Cel line restoration

Greetings. In my previous post I addressed hand inked and xerox lines. In this one I'll address restoration of lines. Wherever I turn I hear the name of S/R labs. Anyone had their lines restored? I talked with Ron Stark (the director of S/R labs) some time ago and he offer the service. Most importantly, how much did it cost you if you had them restored? And is there anyone else that offers the service besides S/R labs. Also what do you guys think. Do you think it takes from the value of the cel?

I have not yet had any work done by S/R labs but I do know that they have done restoration of a lot of high end Disney cels and their work increased their value.

I've heard of someone that has had work done and they've done an excellent job, but they're not cheap.

I've heard of others that have had lines painted on a separate piece of acetate and layered the cel to fill in the line fade. I believe many anime artists that already do fan cels could probably do that for a very low amount.

It all depends on who you trust to "guarantee" the work.

If you know of a very good fan artist, they could probably do the same or comparable job that S/R Labs could do at a fraction of the cost.

It depends on how much damage was done, how valuable you consider the artwork, and how much you're willing part with in the end.

Come to think, what exactly is the line restoration process? Is it really that simple. Just a new layer with the lines. I mean, I'm an artist and know I can do it myself, but I always thought it involved something more complex. Ron Stark never really explained it. Anyone with experience please share.

Mmm...I have not had the process done...
I do have a sketch that had a "touch up"
The lines where fading (I guess) So the studio made another layer, put it on top of the cel and traced the lines.
So when I lift the new layer, it shows the cel with faded lines.
I guess it's the same process. And I think it's best to get it done on another layer. Because if the do it over the cel...Well you know...Humans make mistakes and with an expensive cel, you just can't risk it