Price - how much?
I have tried to list the prices for all the parts, and final price will depend on shipping charges and any import duties. It is hard to estimate, but here is an estimate for a barebone system:
PA3 controller $265
SSQ-ST tube $335
Spooky2 XM generator $114
eBay power supply $100
Spektrotek parts $120
RG-213 cable $90
PA3 enclosure $40
Ikea Trofast shelf $40
Screws, parts, bits & pieces $80
Shipping (China, Canada, US) $250
Total: $1530 + import duties
In addition, you’ll have to spend a considerable amount of time to assemble and test the system.