I've got 240 cups of GAC (carbon) and 240 cups of DI resin I'm selling at cost...
3 cup bags of resin for $5
4 cup bags of carbon to $5
I'm only selling it at club events, e.g. the meetings.
If you can affort it I'd like, but don't require, a $2 donation per each bag. The $5 payment goes to me. The $2 goes in the MARS donations jar.
FYI - The cost of bringing in speakers is climbing. On average, it costs the club around $750 per speaker.