On Sliding Scale:

Siding scale is a tool to help balance economic inequities and to increase accessibility of offerings. I offer sliding scale as much as possible and am open to discussing other options if the pricing is still prohibitive.

Here’s an article with lots of info and diagrams from Ride Free Fearless Money with more info on sliding scale ~ Sliding Scale: Why, How, & Sorting Out Who

Below is The Green Bottle - a helpful image for approximating your exchange on any sliding scale

the green bottle - Edited.jpg