74 280C Side rear window seals

[dquance]

I am hoping someone can help.
I wish to replace the side rear window seals at a reasonable cost.
So far I have received pricing from the dealer and millers that would run about $250 for 4 pieces totalling about 12 feet. Too expensive for me.
Interlok has something that I think would work, unfortunately they only sell rolls of 250 feet minimum.
DBDepot is about the same as the dealer by the time I get it here.

Any thoughts out there?

Thanks.
Doug Quance