As a farmer and also the owner of an online shop engaged in agriculture, I really know what is happening and what my customers want.
That makes sense.
I think you've taken a smart approach by repackaging into smaller amounts as most people are amateur or novice gardeners, who only need small portions at a time:)
One of the reasons is that urban farming is trending for people who live in the city, so they always buy repack sizes so they can store them easily and if they don't need them anymore, they don't feel like they've lost out and wasted money.