Chayote are popular in Mexican and Central American markets here in Texas. I imagine they have cooking methods that go much farther back than those developed in Oz.

The produce I'm working with these days most frequently is sold in bushel baskets at farmers' markets. The grocery store sells via styrofoam trays and cellophane or individually, usually packed in plastic grocery bags. (I've bought peaches by the half-bushel, that is actually a large box.)