They are meant to be random. For me, it's a no.

 

If anything I'd like the minerun's to be at certain dates. Like every Christmas, or after every new minecraft update (1.9, 2.0, etc.)

 

Thank you for suggesting we do more mineruns, and for enjoying the events, however "selling" these events would still not guarantee they happen, and it would be highly unfair to those who purchase them if they are "late" , "don't happen exactly on time" or perhaps "have unforeseen issues during the event". I also find it silly to charge people to run an event to be honest =P

I will have to try to do these more often, that's unfortunately the only way :(.