Not many variations of goods. The amount of items appear on server each day due to golden farming / boss farming from the beginning of the game until now should be far much more than the amount of goods on market. Where do they go ? For example, I wanna find me some exc mage legend gears and there's exactly 1 - ONE - item on the whole market as of the current time i'm typing this. And for Lemurian Mage's armor as a whole, there's a whopping 6 items .. Even exc rings, exc pendants... are too few. For a base 1000 players, you would think the market should be more lively than just this. Why ? I can think of several reason.
1/ This web market conflict with the game's personal shop. You can only post items to either this or in game shop, you cannot post your items on both place.
2/ The 1000 base are mostly alt & bots.
3/ The items are on characters that are no longer playing / unplayable / banned
4/ My own opinion. The amount of bon you can purchase by real money is too costly. If I should remind you, this is a private server. There's always the risk of admins give up this server, as it happened with many other private servers out there. Therefore, spending like $15 to add an exc damage rate option on my item ... for me that's not worth. Not one bit. People been saying MUX has been around for 5+ years and it's a long term living, maybe even the longest private service alive... but it's only to say that that there are many wipe before in that 5 years, and the result is this 1 month old Apollo. Well, this might be assumptious and might not correct because it's based on my hearsay, but you get my idea.
I don't intent to make any dispute so i won't argue with anyone about any of these point. Whether you consider them or not depend solely on you.