I wouldn't buy any more plugins from this dev, They just don't support or respond. I had to buy another identical plugin on another plugin page because I bought this one and couldn't use it.

Broken plugin
It was really great at first, but then it stopped working
there are enough unanswered supoort requests.
Direct inquiries to the provider remained unanswered.

It currently doesn't work, it gives multiple bugs on console and players hate it now, it was one of the best in its day.

Tacking on to the "Plugin is Broken" reviews...  

There are several issues with this, from an error thrown in RCON preventing PumpJacks from restarting after a server reboot, to quarries losing their levels on server reboot, resulting in massive frustration for our players (and of course, our Admins).

I've been shopping around for another quarry-related plugin to replace it - I found one, and started looking for a server running the plugin so I could try it out...  I found a server where THIS developer appears to be listed as "Staff," answering questions about the plugin I'm considering.

I add that to note that it appears even this developer has abandoned his own plugin on servers where he's involved at some level.

Message received.  Moving on...

Plugin is broken. A fix or solution hasn't been offered in over a month. Plugin unusable at this point of time. 

this is best brrro, this is best, love it man, adds something for my players to do with all the money they have. awesomely easy to configure, add as many level as you want 5 to 5 billion, or whatever you want  sooooooooooo goot.

My self and my VIP+ players absolutely love this plugin 5 stars

Despite some bugs, the plugin is awesome! The author is allowed to put a lock on the quarry. So that you could just put it on the quarry with a lock in your hands, just like on the door. and that he would be visually somewhere so that you can change the password. I want to ditch another plugin that puts a lock on the quarry: QuarryLocks. I want your plugin to have a similar quarry lock. BUT I would like to see not the command / QR to close the quarry, but just put the lock on the quarry as on the door) Thanks for the plugin)

Fine working plugin.

This plugin is very good. I like it very much

Very high-performance plugin, if you are looking for a Quarry-Level plugin for your server, this is the right plugin for it!

We can only recommend the plugin, the dev also listens to the wishes and problems of the buyers, we are very satisfied with the plugin! The money was worth it!

The plugin receives 5 stars for price performance, customer service! Just great!

Ps: If you don't buy it for your server, it's your own fault! Your community will love it!

Dev actually listens to consumers, Fast and transparent. amazing plugin, just needs more config settings.

Responsive dev - high quality plug-in.  If you have quarries or pumpjacks on your server, this is a must have.  Stop the map grid sprawl with 4 or 5 entities and upgrade just one!  Brilliant