We've searched the internet and found the largest collection of On30 Scale trains for sale is on eBay. Below are the listings for 'bachmann shay'.

On30 WISEMAN MODEL SERVICES 1890s GILPIN STYLE BACHMANN SHAY CONVERSION KIT
On30 WISEMAN MODEL SERVICES 1890s GILPIN STYLE BACHMANN SHAY CONVERSION KIT
$119.95
Time Remaining: 8d 20h 22m
Buy It Now for only: $119.95
Bachmann Spectrum T Boiler Two Truck Shay Steam Locomotive Train On30 25699
Bachmann Spectrum T Boiler Two Truck Shay Steam Locomotive Train On30 25699
$160.00
Time Remaining: 9d 21h 31m
Buy It Now for only: $160.00
On30 Bachmann Spectrum  25699 2 Truck Shay lettered  painted DCC ready
On30 Bachmann Spectrum 25699 2 Truck Shay lettered painted DCC ready
$140.00
Time Remaining: 23d 23h 4m
Buy It Now for only: $140.00
Bachmann on30 Two Truck Shay
Bachmann on30 Two Truck Shay
$199.00
Time Remaining: 28d 20h 17m
Buy It Now for only: $199.00

Other On30 Scale train items recently purchased through this site:

Bachmann on30 Two Truck Shay
Bachmann Spectrum T Boiler Two Truck Shay Steam Locomotive Train On30 25699
On30 Bachmann Spectrum 25699 2 Truck Shay lettered painted DCC ready
On30 WISEMAN MODEL SERVICES 1890s GILPIN STYLE BACHMANN SHAY CONVERSION KIT