I will pay more if seller becomes a regular.
ex. past 10 stacks I will pay 10% more, for every 10 stacks after I will pay an additional 10% for each stack from the original base price. ie. 55k/stk after first 10, 60k/stk after next 10.
Up to a maximum of 50% from original base price.
Regular sellers are also eligible to "free" tailor services down the road upon supplying pattern and materials.