Actually I do not remember the exact performance over Team Render, I have use for rendering out animation scenes overnight with couple of machines. Redshift/Arnold demands standalone license for each machine, unless if you have a business as a studio you could get an agreement for bulk licenses. Interesting side is if you use Octane for your workflow with any number of Macs there is no cost, you can use each Mac with octane. Because by M1/2 Ultra or max seen as single GPU unit and you can not add another GPU but it is free. On the other side for number of PC's you had to get licenses ( in the past there was render nodes for Octane but I do not know how it works today ) for each of them.
For Redshift and Arnold Prior number of standalone bulk license price will very upon the number of machines you have however each of them will be cheaper than standalone license. Last time I check Redshift it was that way, maybe it is different today I have no idea.
Anyway basic issue is using 3-4-5 machines for rendering is not cheap for Freelancers. Maybe 2 machine could be use with 1 license. For rendering which one is faster you could use it for rendering and at the same time you could work with other machine for texturing modeling or compositing. This is how I use my M1 Ultra and PC for now because Maxon One is not cheap today and will not be cheaper in the near feature.