Price's of used JM Fab COP setups

[punxnotdead185]

I am just curious if there is something I am missing or what with COP systems. I am planning on doing COP and I have been looking at used COP setups, specifically the JM Fab plate with 300M coils and I am curious why people ask $250 for a $100 plate and $20 worth of coils, is there some other part needed that I don't know about or is everyone selling a COP setup on DSMTuners on crack?