Why subscribe?
A subscription at Retail Terms is a great way to generate "moonlighting" income on top of regular sales or contracting income, to differentiate from competition, or to set up spouses or adult children to work in concert with you without triggering a conflict of interest with superimposing entities, bodies or boards.
Hint: by imposing a minimum compensation level to qualify for inclusion in sponsorship (elevated levels of discounts), subscription may even exert upward pressure on otherwise average compensation levels.