For example... the cheapest coilover setup is 900 bucks and requires welding... or you can use bolt struts from a different platform...
I'm trying to use the super 8.8 off a 2015 mustang... bolt on factory brakes on the rear, hubs etc... 40 bucks for a hub sure beats 800 for stub axles and then another 600 for companion flanges.
The s30 platform market is saturated, very true. But it's saturated with severely overpriced junk.