All i can say is that, DF's reputation is being hurt by these sellers, no matter how associated they are. i, nor anyone i know will ever part with money to these people, especially since they lack credibility and professionalism to the extent where i wonder (as my friends do) if the tickets are counterfit.
I would rather part with money via the internet and starve an immoral company of its profits until it cleans up its act.
I WOULD part with money to a paintball site like DF, and would encourage my friends to, but if it was endorsing activities like this, i would strongly recommend using another company or site. It may not endorse the activities, but it still opts to ignore them :/
DF's sites however, are great! i loved the day out and couldnt stop talking about it for weeks, which is enough promotion in itself! if i knew they were using good companies, id recommend them again, i just feel bad for the marshals and honest workers in DF who get associated with the scummy practise of another company.