Some perks can't be made because of the EULA.
The EULA makes it so you can't sell a product that is really "Pay to Win", which is basically buying something just to get better or help them succeed the main game for the server.
That's why most plugins are now free.
<div style="text-align:center"><span style="font-family:'Trebuchet MS',Helvetica,sans-serif"><strong><span style="color:#e74c3c"></span><span style="color:#e74c3c"></span><span style="color:#e74c3c"></span><span style="color:#e74c3c"><u>_____________________________</u></span><br />
IGN</strong>: VampireGamer7<br />
<strong>Discord</strong><span>: Vamp-Uchiha#6480</span></span></div>
<div style="text-align:center"><span style="font-family:'Trebuchet MS',Helvetica,sans-serif"><strong>Code</strong>: Java, Python, HTML, CSS, Discord.JS, & Skript<br />
<strong>Rank:</strong> VIP (2/15/19 - 7/7/19)<br />
<strong><span style="color:#e74c3c"><u>_____________________________</u></span></strong></span></div>