Yes I would buy mats from another player if it were available. I get to play about 4 hours a week, I've spent the last week trying to get my two ships upgraded to the highest FSD i can, I still haven't finished, still trudging around the galaxy collecting Wakes and materials. But to get the high jump rates I want it's what I have to do. Bartering with other goods would be OK too.
I pity busy players with limited game time. I'm at the stage in my life where 4hrs per day is par for the course. Mat gathering / Credit runs = a resource time sink for me that does not cut into other activities I want to do. It would be nice if my surplus time could benefit players with limited time. <-That's the root of my proposal.