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

Sn3 CRAFTSMAN BANTA RIO GRANDE SOUTHERN LASER CUT RICO DEPOT OUT BUILDINGS KIT
Sn3 CRAFTSMAN BANTA RIO GRANDE SOUTHERN LASER CUT RICO DEPOT OUT BUILDINGS KIT
$49.95
Time Remaining: 4d 21h 13m
Buy It Now for only: $49.95
HO HOn3 Scale Durango Press HOn3 Rio Grande Southern Flanger 01 Kit DP 51
HO HOn3 Scale Durango Press HOn3 Rio Grande Southern Flanger 01 Kit DP 51
$29.79
Time Remaining: 6d 22h 22m
Buy It Now for only: $29.79
On3 On30 WISEMAN MODEL SERVICES RIO GRANDE SOUTHERN OUTFIT CAR 01789
On3 On30 WISEMAN MODEL SERVICES RIO GRANDE SOUTHERN OUTFIT CAR 01789
$69.95
Time Remaining: 6d 23h 17m
Buy It Now for only: $69.95
On3 On30 WISEMAN MODEL SERVICES RIO GRANDE SOUTHERN DRAG FLANGER 01 KIT RGS
On3 On30 WISEMAN MODEL SERVICES RIO GRANDE SOUTHERN DRAG FLANGER 01 KIT RGS
$59.95
Time Remaining: 8d 14h 39m
Buy It Now for only: $59.95
On3 CRAFTSMAN SSLTD RIO GRANDE SOUTHERN FORD INSPECTION CAR KIT UNSTARTED
On3 CRAFTSMAN SSLTD RIO GRANDE SOUTHERN FORD INSPECTION CAR KIT UNSTARTED
$69.95
Time Remaining: 8d 22h 13m
Buy It Now for only: $69.95
On3 On30 O CRAFTSMAN RAGGS RIO GRANDE SOUTHERN PLACERVILLECO DEPOT KIT NEW
On3 On30 O CRAFTSMAN RAGGS RIO GRANDE SOUTHERN PLACERVILLECO DEPOT KIT NEW
$329.95
Time Remaining: 9d 21h 12m
Buy It Now for only: $329.95
BINKLEY KIT BUILT HOn3 NARROW GAUGE DENVER RIO GRANDE DRGW BOX CAR WAGON 315 nd
BINKLEY KIT BUILT HOn3 NARROW GAUGE DENVER RIO GRANDE DRGW BOX CAR WAGON 315 nd
$65.25
Time Remaining: 12d 9h 46m
Buy It Now for only: $65.25
On3 On30 WISEMAN MODEL SERVICES RGS RIO GRANDE SOUTHERN PLOW FLANGER 02 KIT
On3 On30 WISEMAN MODEL SERVICES RGS RIO GRANDE SOUTHERN PLOW FLANGER 02 KIT
$149.95
Time Remaining: 14d 17h 56m
Buy It Now for only: $149.95
On3 On30 O CRAFTSMAN RAGGS RIO GRANDE SOUTHERN PLACERVILLECO DEPOT KIT NEWb
On3 On30 O CRAFTSMAN RAGGS RIO GRANDE SOUTHERN PLACERVILLECO DEPOT KIT NEWb
$329.95
Time Remaining: 17d 21h 13m
Buy It Now for only: $329.95
BINKLEY KIT BUILT HOn3 NARROW GAUGE DENVER RIO GRANDE DRGW BOX CAR WAGON 3145 n
BINKLEY KIT BUILT HOn3 NARROW GAUGE DENVER RIO GRANDE DRGW BOX CAR WAGON 3145 n
$65.25
Time Remaining: 20d 6h
Buy It Now for only: $65.25
THREE VOLUME SET RIO GRANDE Chasing the Narrow Gauge Vol I  II  III
THREE VOLUME SET RIO GRANDE Chasing the Narrow Gauge Vol I II III
$120.00
Time Remaining: 20d 8h 7m
Buy It Now for only: $120.00
Durango Press HOn3 Rio Grande Southern Flanger 1 Kit DP 51
Durango Press HOn3 Rio Grande Southern Flanger 1 Kit DP 51
$29.00
Time Remaining: 23d 22h 25m
Buy It Now for only: $29.00
On3 On30 O CUSTOM BUILT RIO GRANDE SOUTHERN OPHIRCOLORADO DEPOT
On3 On30 O CUSTOM BUILT RIO GRANDE SOUTHERN OPHIRCOLORADO DEPOT
$299.95
Time Remaining: 24d 21h 12m
Buy It Now for only: $299.95
Durango Press 59 HO Denver  Rio Grande Western Water Tower HOn3 Kit
Durango Press 59 HO Denver Rio Grande Western Water Tower HOn3 Kit
$54.58
Time Remaining: 28d 8h 45m
Buy It Now for only: $54.58
HO HOn3 Scale Durango Press HOn3 Rio Grande Southern Plow Flanger Kit DP 42
HO HOn3 Scale Durango Press HOn3 Rio Grande Southern Plow Flanger Kit DP 42
$54.79
Time Remaining: 35d 22h 53m
Buy It Now for only: $54.79
On3 On30 WISEMAN RIO GRANDE SOUTHERN MODEL T FORD INSPECTION CAR 1 KIT SSLTD
On3 On30 WISEMAN RIO GRANDE SOUTHERN MODEL T FORD INSPECTION CAR 1 KIT SSLTD
$49.95
Time Remaining: 38d 10h 47m
Buy It Now for only: $49.95

Other On30 Scale train items recently purchased through this site:

THREE VOLUME SET RIO GRANDE Chasing the Narrow Gauge Vol I II III
On3 On30 WISEMAN MODEL SERVICES RIO GRANDE SOUTHERN OUTFIT CAR 01789
On3 On30 WISEMAN RIO GRANDE SOUTHERN MODEL T FORD INSPECTION CAR 1 KIT SSLTD
On3 On30 O CUSTOM BUILT RIO GRANDE SOUTHERN OPHIRCOLORADO DEPOT
Durango Press 59 HO Denver Rio Grande Western Water Tower HOn3 Kit
On3 On30 WISEMAN MODEL SERVICES RIO GRANDE SOUTHERN DRAG FLANGER 01 KIT RGS
On3 On30 WISEMAN MODEL SERVICES RGS RIO GRANDE SOUTHERN PLOW FLANGER 02 KIT
On3 CRAFTSMAN SSLTD RIO GRANDE SOUTHERN FORD INSPECTION CAR KIT UNSTARTED
HO HOn3 Scale Durango Press HOn3 Rio Grande Southern Plow Flanger Kit DP 42
Sn3 CRAFTSMAN BANTA RIO GRANDE SOUTHERN LASER CUT RICO DEPOT OUT BUILDINGS KIT
HO HOn3 Scale Durango Press HOn3 Rio Grande Southern Flanger 01 Kit DP 51
On3 On30 O CRAFTSMAN RAGGS RIO GRANDE SOUTHERN PLACERVILLECO DEPOT KIT NEWb
BINKLEY KIT BUILT HOn3 NARROW GAUGE DENVER RIO GRANDE DRGW BOX CAR WAGON 3145 n
BINKLEY KIT BUILT HOn3 NARROW GAUGE DENVER RIO GRANDE DRGW BOX CAR WAGON 315 nd
Durango Press HOn3 Rio Grande Southern Flanger 1 Kit DP 51
On3 On30 O CRAFTSMAN RAGGS RIO GRANDE SOUTHERN PLACERVILLECO DEPOT KIT NEW