RegionQuantity (sum not avg) for custom prices
with this data we could decide if the region quantity is too low for our taste, which could allow us to declare our own pricing based on that
example : "if item x has 1 quantity listed on region, do not trust regionmarket and use 250000g instead"
currently we have access to the region quantity on the api but it is an avg, if it was a sum we could find directly the avg. the other way is not possible due to lack of digits, 0 and 1 being the lowest avg so on eu the exact quantity could be between 0 and 123 in those case, we don't have further details. but the best would be to have the exact region quantity.