I will say this in the most sincere and honest way, this is one of the worst plugins i have bought, and here's why.
The plugin itself is ok, it has a lot, but A LOT of bugs that could be easily fixed and shouldn't be present in a 13$ plugin, i paid for a custom items plugin but all i got was a load of headaches and many months waiting for customer support.
Did i mention the customer support sometimes DOES WORSE THAN BETTER, yes the customer support is mostly null, i had to wait at least a month in 2 separate occasions just for the answer to be a link of the wiki. Oh yeah don't get me started on the wiki, the wiki is supper poorly written but somehow the one helper and dev always redirects you towards it, like its gonna help, trust me it wont, this plugin on several occasions delayed my server updates because of customer support, they choose to ignore you and prefer to rudely reply to other users that have may pinged them (which is prohibited somehow) i got more help from fellow users than anything else.
The situation was so bad that i had to buy another WAY BETTER custom items plugin.
I would say that this is a good plugin for beginners since it has a in game item editor, but no sometimes it decides not to work, and if it does you simply don't know how to fiddle with it CAUSE THERE'S NO INFO ABOUT NOTHING.
I cant stress enough the lack of obvious dedication to the plugin since that the guy that answers the most ISN'T EVEN THE PLUGIN CREATOR, i have talked with multiple plugin devs and always the owner answered, cause most of the times nobody except him knows the plugin best, but no, here if the helper doesn't know he will simply redirect you to the wiki.
To me its ridiculous how could someone mistreat so much the people that give them money for their product.
My conclusion is, lack of information, rude and sometimes silent helper, bad coding, and lots of "its in the wiki" is the perfect recipe for a bad and not worth it plugin.