Well, as I told the Dev of this plugin on his Discord, I am going to be totally honest with this review that I will place in each plugin that I buy and that therefore, after using it I have the right to comment, honestly:
1. The plugins work and are great, but for small servers, where lag is not important, on servers with more than 20 players, the lag will be very important and they are not suitable for production servers. (you can check it with spark)
2. I got really tired of the dev continually changing its settings, every 2 months you had to be configuring everything again and that is something that is very tiring, too much if you have many configurations.
3. Update a lot and that is very good, but it is not the same to update, to correct and improve than to rewrite everything and having to change everything again.
4. Recently he merged two of his plugins and for whom we bought them, because "it is the best for us", according to him, when you had made specific configurations and when you had paid. And by the way, the plugin had not even 6 months of having removed it and is already closing it.
In short, it is exhausting and frustrating to use your plugins with so many sudden changes, unsolved problems, because "everything works fine" and because of the lag they cause. Use them on your server with friends, but not for a server with production players. I stop using them immediately find substitutes. This review is my personal opinion and my experience using ECO.
Since you've copy-pasted the same review between three different plugins i'll copy-patse the same response under each of them:
1. Performance is a top priority for me. If I missed any spark profiles you posted in the discord, that's an error on my part, but from what I can see you haven't actually ever reported a single performance issue - and I can't fix something that I don't know about.
2. Over the past few months, my plugins have been getting rewrites and overhauls to bring them up to a higher standard. I made an announcement on my discord about how the rewrites are over and the configs are now in their final form.
3. Basically the same as number 2
4. EcoWeapons and EcoItems merged together into the new EcoItems. That plugin costs more than both other older plugins combined, to make sure that no-one was being cheated out of any money, and to bring the price in line with the new featureset of the plugins. Anyone who bought the older plugins (you included) have been given a license to the new one, free of charge. You essentially got it at a massive discount.
In short, I'm sorry to hear that you've had a bad experience with my plugins - I offered a refund by YekaDev/Koyere declined.