This is a pretty minor thing, but it's something that bothers me personally so I'm just gonna toss it out there.

I really dislike that items aside from decoratives only sell for 1 coin, especially when it comes to seeds. You get more seeds than you will ever need from hoards, and combining them means you lose out on coins. Now the easy counterargument is of course to just not combine them and instead just sell them outright. But a lot of times you want to combine seeds simply to organize inventory and figure out how much you have. Plus there are times you might think you need more seeds than you actually do, or whatever else. For potion ingredients this is less of a problem since averaging grades returns the same amount of items.

Overall, I just think it'd be nice to get a coin return based on grade, kind of like how decorations give coins based on their rarity. The max doesn't have to be very high, maybe 5-10 coins for a grade 100 item. For example giving 1 coin for grades 1-9, 2 for 10-19, etc etc. Or if you make the max 5 coins, 1 coin for 1-19, etc. It shouldn't? be enough to make a huge difference in the economy overall, but it'd make it feel less sucky to return the unneeded items to the server rather than just hoard them.