Already $3320. If you are a collector with DEEP pockets, you'll probably never see another again unless Ruger is hiding some more in the back.
From the auction details:
Model: Ruger XGI Rifle
Serial Number: 800-01250
Caliber: .308 Win.
Rollmark Date: December 12, 1984
This is a very rare Ruger XGI rifle, serial number 800-01250, chambered in .308 Winchester. Less than 100 were fully assembled. It was rollmarked on December 12, 1984 and has a 5-round magazine. Announced in 1984, Ruger never commercially sold any XGI rifles. Bill Ruger put the project on hold indefinitely in 1985 when he decided not to expend additional engineering efforts to improve the rifle’s accuracy. This rifle will be shipped with a Ruger XGI instruction manual, scope rings, and in a white Ruger box of current manufacture.
The Ruger XGI was an autoloading centerfire rifle based on the design of the Ruger Mini-14 rifle, scaled up for larger cartridges. While the Mini-14 was chambered for the .223 Remington cartridge, the XGI was designed for both the .308 Winchester and .243 Winchester cartridges. The XGI was slightly longer and heavier than the Mini-14, but retained the essentials of both the Ruger Mini-14 and the proven M1 Garand/M-14 designs used by the military. Its red recoil pad was to be standard, and like the Mini-14 Ranch Rifles, it had Ruger scope bases machined integrally into the receiver, side ejection, a fold-down auxiliary adjustable aperture sight, and a blade front sight.