I'm not too active anymore and I'm all sold out on every server, but I will say its actually a pretty good time to be buying these days for the OP.
The dupe end of last year restocked a few decent sellers who know what they were doing while escaping the notice of most scammers long enough for them to be too late to capitalize on it. If OP noses around should be able to find a dependable one. The scammers that were here have mostly migrated to discord, EPICnpc and other platforms that don't have the kind of institutional memory the vault provides as a back-stop for scammers. PMs, threads, etc... make it harder for scammers to scam here. There few weirdos that pretended they were selling just for attention or to troll have moved on or moved onto trying to get attention in other ways. If you see things posted about sellers here, this is the Vault and people will start shit and troll just for drama so PM them, ask for some references or satisfied customers that you can check with.
DDOplayer98 has a thread selling stuff here:
http://www.ddovault.com/cgi-bin/yabb2/YaBB.pl?num=1682729310/0#0Be warned that he has people that say he was solid to deal with and others who say he scammed him. From the outside it mostly it seemed like he would at times overpromise and underdeliver. He is due to start selling boxes at like $8 starting June 1st, the OP shouldn't pay any more than that, shop around.
OP, use dummy accounts to buy, and do not under any circumstances pay until you can see the product you are going to be buying in the trade windows. Also, until you know the seller, buy in several small purchases rather than one large purchase. Even then most solid sellers will be smart enough to sell an order of say 100 boxes in 10 lots of 10, is it a hassle? yes, but better than either party getting fucked over. Just be smart.