I have been reading through the support forums to find out about Pro Sites pricing table customizations and it seems there are currently two options.
1. Buy this plugin(easy method): https://wpmu-hosting.net/whmcs/cart.php?gid=6
2. Manually edit code(tough for someone who isn't a developer)
I will likely buy the plugin; however, I feel Pro Sites should really have customizations built in for this. The current pricing table design is very out-dated looking.
Any updates on this would be much appreciated!