Curious if anyone makes use of these resin filters anymore? Asking because there is a listing on a local online sales site for around 50 Cokin filters and various holders and adapters - list or anything to identify which ones are included. All the seller wants for the lot is $450.00. No interest in them myself. Seems to me the seller is dreaming and/or is uninformed. I assume many out there like me stlll have a bunch of the filters somewhere in a drawer, unused. I think I have around 18-10, mostly left over from my film shooting days. Even then I didn't use them very much. I think the only ones I've used in the past while were the graduated density ones, but they didn't really make a whole lot of difference. Probably could use denser ones.