1969 Camaro 12-Bolt, BV Code, 4.10 Ratio.. Premium for Original Ring & Pinion?

[octard]

Regarding this eBay auction for an original 1969 Camaro 12-Bolt, BV Code, 4.10 Ratio rear axle assembly:

http://www.ebay.com/itm/302266378005?_trksid=p2050601.m570.l5997&_trkparms=gh1g%3DI302266378005.N34.S1.R1.TR2

Should there be an expected premium on the purchase price for all original parts, namely the ring and pinion gears within?

Thanks folks.

[NorCam]

Exact same date as my BV coded 12 bolt. Price is decent too