a trim machine is like comparing a walmart electric on sale shaver to a 5 head schwick that costs 8 bucks for the razor head. that walmart trim machine is gonna do more hair ripping and pain that anything else... plus the 7500+ it costs for a trim machine can pay alot of people to trim alot of weed and its nothing beats the quality eyes and hands can produce. average price paid a pound to trim a pound is 150. for 7500 you could pay people to trim 50 pounds... so you would need to have 100 pounds a year to make the machine worth it since the machine also takes about 4 to 6 guys to feed it. then you also have just as much clean time on the machine as you do run time.
