So I started discounting equipment based on:
"Equipment discounts apply to individual items, go up in multiples of 5% and cost 1,1,2,3,5,8,13,21,34,55 points per level"
However, it actually goes 1,2,3,5,8 and to get from 20% discount to 25% is 8 points not 5. Please correct this. It would be nice to get the 5-6 points back I wasted finding this out, but not a big deal. Also, you might want to check the equipment improvement selections as well and goods price discounts to make sure they are working properly.
Changelog might be inaccurate.