If I was a GM who uses laminated maps I think I might be interested, and the price is on a par with other supplements and accessories available. I must say that i do not use laminated maps (not because I don't like them, just because I don't like buying accessories on the off chance that I will use them) but have have played with some who do. I do not think they would like to pay that price for a one-shot though.
Just how fragile would these be? The major problem I see is that the print might get worn quickly if there is no protection over it. Would you be able to do an overlay on the cling stick sheet, which might also help the durability? Would add to the cost though.
What kind of art would you be putting on these strips? Smoke? Fire? Spell effects, and other temporary/portable objects?