I noticed that the pachinko and shop prices also scale based on level, which creates another issue on the long run. The pachinko prices are reasonable for level 40, but if the scaling is linear like it seems to be, then at level 400 a single pachinko spin will cost 40400 currency (366200 per 10x) and a single common item in the shop will cost 83786 currency, 125985 per rare item, 143500 per epic item (which is actually quite reasonable) and an unknown amount per legendary item (if they even appear in the shop at all).

This means that it could easily reach bizarre costs in order to obtain even generic items for higher level players. This is unreasonable, especially when there is a reasonable chance that legendary items won't appear in the shop at all and you need to use pachinko for them, resulting in people spending a full days worth of collecting money in just 1-2 clicks on the 10x pachinko and needing to spend a whole months worth for a reasonable chance at one you can actually use...