A agree with earlier reviewers, that searching by printer type is irrelevant. 3mm ABS is 3mm ABS, 1.75mm PLA is 1.75mm PLA. If you have some exotics that do only work with specific printers, then maybe do the 3 categories instead of 2 (PLA, ABS, OTHER).

As others have mentioned, wood, metal, magnetic, and transparent ABS are very desirable. I also notice that you don't have any neon, silver, or gold.

Personally I only print with ABS, I've never once used PLA, and I don't plan to change that. So I would like to see greater offerings for ABS.