there is grow up demand for new items because:
- items are bounded, if player want to have better item then cant sell old item or use it into merc;
- when player want to change merc then need to buy new items;
- crafted items have 2x durability than not crafted items, economical is to use crafted items
- every day register teens new players and they will buy new items.
if you cant cooperate with guild members then you have very expensive resources to craft items, but if you can then every will have lot diamonds
PS for me still is too high chance to craft legendary and epic items, especially epic