Own the same Machine, LOVE IT
105-1530 is a RF-30 variant that has a factory variable speed belt drive on it.. R8 collets, 3 phase 1 - 1/2 HP motor I run mine on a Teco VFD.
http://monarch14.blogspot.com/2014/03/3-phase-power-in-home-shop.html
It would be interesting to see if the specs on that unit match the machine I have:
Table is 8 x 29 3/4 with 3 T slots
24 inches X axis travel
7 1/2 inches of Y axis travel
5 1/4 inches quil (Z travel)
T slots 2 1/8 and 4 1/4 on centers
Uses 'Bridgeport' standard clamping, 1/2 inch studs and 5/8 x 1 Tee nuts. I have photos of my unit up on the Yahoo Mill_drill group where a number of us hang out
https://groups.yahoo.com/neo/groups/MILL_DRILL/photos/albums
There are a number of photos of my units VS drive attached to the end of this thread
http://www.hobby-machinist.com/showthread.php?t=20283
Price is always a little as the seller will accept and as much a buyer is willing to pay. My unit came off FeeBay, was described as needs work and I had to drive to Omaha, NE to go get it but for $124, I think it was worth it. I have to finish rebuilding the fine feed shaft for the Z axis, its all chewed up from loose handles. And I had to mill out 2 of the TEE slots because the factory never did.
I did find out from Enco Tech support that the 105-1530 is considered out of support life, so if you or I need parts for that unit we are out of luck. (Which I would use in price Negotiations. You're selling me an AS is, no parts available.....) IMO if I need something other than bearings, etc. I'll either make the replacement or source a part from Enco / jet / Harbor Freight and adapt it to fit. Thats why I HAVE 2 metal lathes and a mill.
I have not been able to locate an exact users - parts manual for the unit, but their pretty self explanatory..
let me know if you want any pictures of my unit or to compare notes. So far it's a great machine. I graduated to it from a HF bench top Sieg mill. After babying every cut on that Tiny bench top machine, I got to this guy and my thoughts were: " SO.. THIS is milling......."