I'm looking at buying the Eclipse P600S due to the high airflow and high HDD capacity options, but I'm having trouble tracking down any reliable info on HDD mounting. Google seems to yield a lot about the mounting brackets for the Evolv ($6.99 per bracket from Phanteks, much more on Amazon).

This seems like an extremely high price to pay per drive to add to a case. Going from case cost plus approx. $50 for mounting hardware for the drives puts me in the range of a whole different level of cases and I'd likely be better off going with a different option. Anyone been successful buying a couple cheap drive cages that match up and mounting those? I've seen other cases work with a 3x3.5" HDD cage that could stack which ultimately could free up some space and maybe get more than 10 HDDs as well.