Any (developing world) group buy experts here? Many years ago, I considered trying to organize fertilizer group buys in sub-Saharan Africa via SMS, where it see

Any (developing world) group buy experts here? Many years ago, I considered trying to organize fertilizer group buys in sub-Saharan Africa via SMS, where it seemed (to me, as a non-expert in this subject) that many smallholder farmers lacked access to affordable high-quality fertilizer and that group buying might help. I explored this enough to apply for a grant to develop it (and delivery logistics), but that didn't come through and I didn't pursue it further. Has something like this been tried? Is it needed? Seeing this article brought it all back.