A marketplace aggregating suppliers who specifically offer low minimum order quantities for glass bottles, atomizers, and packaging components would solve a genuinely painful sourcing problem for a growing community of indie fragrance makers who currently spend hours hunting for suppliers willing to work at their scale. The business earns a commission or lead fee from suppliers gaining access to this underserved small-batch buyer segment.
The research question I'd chase first is supply side, honestly, since the real challenge isn't demand from perfumers, it's convincing enough small-minimum-friendly suppliers to list in one place instead of continuing to rely on scattered word-of-mouth referrals within perfumer communities.