So, we get an order for directional signage with premium reflective. Great, the folks down the road do almost all interstate signage in the state, and they have been helpful by selling us short runs of the diamond grade reflective. Last time that we got some it was $3sq/ft for 12'x3', in 2018. So this past week we ordered some. Once I got around to sticking it, I immediately notice its not 3m diamond grade, but rather nikkalite HIM. Looking over the invoice, it's calling for DG material, priced at $9sq/ft! Talking to the other company, they get this for a 'steal', and they haven't had issue with it. He said he would reduce the price of what we had received, since it is not what we ordered. I told him I could tell my customer that they could take a small discount for a second tier material (10 year warranty vs 12 year), but that would be up to the customer. In the end he is reducing the price to $5sq/ft, and wants to give me a credit in their system. What would any of you do? I have 3 options as I see it. 1. Ignore everything and just produce the signs. 2. Tell him to shove it, just give me what I asked for, and get the 3m diamond grade. 3. Offer the customer an inferior product for a discount. Any thoughts?