Groups have been selling clears for EX/"Savage" content since Coil was a thing, probably even before that too. As far as I know most of them do it for gil which isn't against ToS. What they do is go into the instance you want a clear/loot for, have you die ASAP, clear it as a 7-man team, and if you arrange it beforehand let you have the drop at the end. If you see someone stupid enough to advertise the service for real money in PF by all means follow Kisagami's suggestion to report them, though. Just keep in mind that SE won't care about your screen shots or video proof- they vet claims with their internal investigation tools only.