Maybe this will help.
Have you ever read any of the many-many threads about how cheap almost ALL Cor-X signs are ??
They are sold as cheap and will remain the cheapest of all signs, so it/they shouldn't last very long too begin with.
If someone comes into your shop wanting a Cor-X sign, no matter how much you put into it..... is there anything cheaper in your shop besides paper and a magic marker ??
Why would you.... or anyone waste clear-coating the cheapest sign possible ??
If they want it cleared, charge for it and it's still the cheapest of signs and won't last much longer for too many numerous reasons which are too hard to list.
Discount ?? Heck no.
We just put a dibond sign on an existing bracket on a building about 2 months ago. I told the lady she should have a chain at the bottom end to prevent too much swinging. She said she didn't want to spend the extra money. I literally just got off the phone with her while typing this response..... and she wants to know how I'm gonna go about re-doing her sign, since the wind blew it down so quickly ?? I told her to call her insurance company and let me know if she's paying me over again, or to expect a check from her insurance company. Her comeback was... but you just put it up. It should've lasted longer than 2 months. I said it would've if a hurricane hadn't just gone down her street and ripped half the other stuff up out of the ground. Did you notice all the telephone poles down ?? The trees down ?? The power lines and other things destroyed from this storm ?? She said, alright, I'll bring it over to you and we'll see if you can mend it. So as not to muddy the waters... I said, if I can do that, it will cost you less then making the sign over again and you probably wont have to inform your insurance company.
No discounts unless you're feeling guilty or did something knowingly.... wrong.