My dealer has the filters for $6.99 and the crush washers for like 99 cents. I use the Mahindra filter because it seems to be very high quality. I run T6 Rotella for oil
I have reused my crush washer, I'd say they're only good for about one reuse though. Gotta crank down on it to get it to seal, I'm not crazy about that and the possibility of stripping threads.