the lowest you can get in the country.. I believe kelinginc has..
CNC Router Keling Technology Inc
but this also Chinese.. and many part built into machines... comes from china, Taiwan and many other countries..
my very private opinion, don't buy under 24x36 machine.. the 6040 I think about 2000 til it gets your door.. or more..
if goes over 2000 then it falls to custom..
a 24x36 start somewhere 2800... for this you have to add the custom fee if private import then about 150 plus a broker fee..
parts? small replacement like a spindle or controller parts takes a week.. for me a pendant came 4 day..
also in California already several warehouse has parts..
edit:
ians link I believe the 3040 and """mistakenly"" listed 6040..
to starting with.. really a deal.. you buy it and use it..
3 Axises Linkage CNC 6040 Router Engraver Machine Drilling Milling CK | eBay
to start you wont find cheaper..
one more you can try cncrouterparts.. they have kits.. but again, the control, a spindle will takes up itself least 800-1200..