Forced to use monthly membership if you want multiple plug-ins

I already have a slider plug-in with WPMUDEV, however I also want to try the Ultimate Facebook plug-in.
It appears though that this is not possible, as the monthly membership is forced on me.
Is this seriously the only option? Why can't I have more than 1 plug-in without having to pay an exuberant/excessive monthly fee for features and plug-ins that I do not require?