$289 G540 This IS a deluxe, advanced features breakout board also.
$098 Keling KL23H2100-35-4B 381 oz motors for X and Y
$099 Keling KL34H295-43-8A 906 oz N34 motor for Z (Detunes to 520 oz W/G540. Changing Z pulley to 1.23:1 = 640 Oz)
$060 Keling KL-350-48 48V/7.3A PSU. (This will handle 3 motors. 4th axis may need more amps.)
$014 pulley http://sdp-si.com/eStore/PartDetail.asp?Opener=Group&PartID=59152&GroupID=217
---------
$560

 

http://kelinginc.net/

You may also need some other stuff:
 
You can use THIS wire for motor cables and home/limit switches. Ground the drain wire ONLY at the driver end. (Pins 3,4,5 for motors, PSU Ground for homes/limits)
 
http://cgi.ebay.com/Stepper-Motor-Wire-by-the-foot-2-individ-shielded-CNC_W0QQitemZ300324182374QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item45ecb75966
 
 It also comes in 100 ft roll.
 
BELDEN 8723-100 STEPPER MOTOR CABLE WIRE
 
$32 http://www.fullcompass.com/product/305455.html 3 WK SHP
 
$33? http://www.jameco.com/Jameco/catalogs/c273/P101.pdf
 
$38 http://www.mcmelectronics.com/product/BELDEN-8723-060100-/36F1033WA
 
$39 http://www.jameco.com/webapp/wcs/stores/servlet/ProductDisplay?langId=-1&storeId=10001&catalogId=10001&productId=734180
 
$40 http://www.markertek.com/Product.asp?cat=CABLESCONN&subcat=BULKCABLE&prodclass=AUDIOBULK&baseitem=BL%2D8723%2D100&search=0&off=0&showreturn=0&utm_source=&utm_medium=&utm_term=&utm_content=&utm_campaign=
 
$44 http://www.alliedelec.com/Search/ProductDetail.aspx?SKU=2161456&MPN=8723+060100&R=2161456&SEARCH=2161456&DESC=8723+060100
 
EUROPE http://www.cable-world.co.uk/online.htm
 
 
You won't need any db9 motor connectors with the G540, as they come WITH it. The G540 also has circuitry for simple spindle speed control and outputs for dc relays to turn coolant pump (Or router motor) on or off.
 
These inexpensive relays are very good for starting and stopping spindle motor, cooling pump, vacuum etc.:
 
https://www.surpluscenter.com/item.asp?UID=2009102610515283&item=11-3167&catname=electric
 
You will need one of THESE 1/4 Watt 3.48K resistors for each 381, 387 or 906
 
3.48KXBK-ND
 
They only come in a pack of five, so about $1 for 10. With shipping it's about $3.50
 
http://digikey.com/
 
Or, in Canada:
 
http://digikey.ca/
 
You will also need an estop switch, Home/limit switches and a 6 foot "straight thru parallel port cable. These are all available from Keling:
 
http://kelinginc.net/CNCPackage.html
 
The G540 is so small that many are mounting theirs INSIDE the computer case.
 
Camtronics has a case MADE for the G540:
 
http://s120220635.onlinehome.us/stepper-components.asp