User blog comment:Mythical101/Toy Factory/@comment-25404524-20190812010309/@comment-25404524-20191008080223

Also take note of general supply and demand. Assume adequate sellability is a multiplier sold of 0.8, 1.0 being instant sellability (e.g. Lemonades, Cookies, Apple Juices, Coconut Milks), and 0.0 being absolute unsellability. Apples are generally a multiplier of 0.2 for sellability in groups of 10x or 0.3 for groups of less than 5.

Personally, Coconut spam is probably your best bet.