yes, you should only pay 100 for a re spray of the interior.
it looks great, but it will wear off,over time. especially using harsh chemicles.
most interiors that people try to clean ,use the wrong products. and start to brake down the dye.
if you need more than soap and water, most likely it will only be a matter of time, before you wear it out.
also many people think it's dirt but in fact it's a worn section.
to clean it try lexol it is ph balanced, and condition it with lexol. there are alot of pretty good products out there.
it's best to stay on top of it. don't wait a year or 2 than try to get it back to new.
many people will tell you not to use saddle soap , but on many types of leather it in fact cleans & protects your interior.
just like paints, if you don't wax it, it will fade, etc.
everything needs some type of protection.
so yes, you can have the interior dye'd. with excellant results.
or go out and spend a small furtune in a new interior.
my new interior i'm having made is 2 g's.
so compare the 100 to re dye it or buy a new 1.
try
ebay they have many options. at low lost 159 to 600.
or even that foam neoprin wet suit type product.
you have many options, just decide on how much you want to spend.
gorilla