Has anyone any ideas for garnering solid support for the storage group buys?
I gave up a long time ago on collaborative efforts with other people because of the exact same difficulty you describe. People with the best intentions are enthusiastic at first until it comes time to put up some time or money. Then, not so much.

SagerXX mentioned in DIAP's "Successful Food Storage" thread how hard it is to get people to commit their hard earned cash.
I organized a group buy among friends and family but had a fretful time getting it all to come together. Folks that said they would commit did not. We're there now, I found a store a couple of hours away that sells the Wheat Montana grains I wanted to use. They had enough need at their store to be able to fill out my 5000# minimum order for Wheat Montana. I'll just have to drive five hours round trip to get it. It's still worth it to get the price and quality of Wheat Montana's products. Check out Wheat Montana's Wholesale Price List
Has anyone any ideas for garnering solid support for the storage group buys?