I sell ATC parts kits for small machines as an ala carte menu. Even for the Chinese ($1800US) spindles.
Spindles $1800 to $6000
Holder, fork & collet $200 per tool
Pneumatics Kit $500
VFD, HF VFD wire, programming, signal (logic, up to spd, stopped, fault) Tested ~$500-$750 HSD add $200
I/O relays/gender changers ~$250
Macros & Programming ~$500
Inductance prox tool measure switch (TLM) $200
Pneumatic Dustfoot $450
Air Counterbalance $200 (requires pneumatics kit)
Pneumatic Slide away tool racks $1000 & up
Rotary Carousel racks $2000 & up
Onsite installation ~$1500 + $500 for pneumatic or rotary racks
Phone Support $75/hr
Most small parts only kits start at $5500, $1000 less if going
user purchased Chinese spindle
Here is a US made 3hp version with 6 tools & TLM on a 24" wide table showing many of these features:
https://youtu.be/qtzkAExTA00One mans "crazy expensive" is anothers "what a bargain, can't believe I didnt do this 5 years ago!"