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

O ON30 SCALE SILVER CITY MODELS RESIN STEAM BOILER LOGGING
O ON30 SCALE SILVER CITY MODELS RESIN STEAM BOILER LOGGING
$39.95
Time Remaining: 9d 7h 20m
Buy It Now for only: $39.95
O SCALE On3 On30 1 48 WISEMAN MODELS OKT 22 KLEIBER OPEN CAB FLAT BED TRUCK KIT
O SCALE On3 On30 1 48 WISEMAN MODELS OKT 22 KLEIBER OPEN CAB FLAT BED TRUCK KIT
$54.95
Time Remaining: 12d 10h 16m
Buy It Now for only: $54.95
HOn3 BRASS DRGW UNITED SCALE MODELS TENDER TRUCKS NIB
HOn3 BRASS DRGW UNITED SCALE MODELS TENDER TRUCKS NIB
$32.99
Time Remaining: 12d 19h 52m
Buy It Now for only: $32.99
Campbell Scale Models 357 HO HOn3 Coaling Station Kit
Campbell Scale Models 357 HO HOn3 Coaling Station Kit
$44.99
Time Remaining: 16d 5h 21m
Buy It Now for only: $44.99
Sn3 Rio Grande Models LTD Disconnects 3324 Metal Scale Model Kit
Sn3 Rio Grande Models LTD Disconnects 3324 Metal Scale Model Kit
$49.99
Time Remaining: 16d 20h 23m
Buy It Now for only: $49.99
KMP Models HO Scale Willamette Loader Steam Donkey Craftsman Kit NIB
KMP Models HO Scale Willamette Loader Steam Donkey Craftsman Kit NIB
$72.95
Time Remaining: 23d 21h 25m
Buy It Now for only: $72.95

Other On30 Scale train items recently purchased through this site:

Campbell Scale Models 357 HO HOn3 Coaling Station Kit
O ON30 SCALE SILVER CITY MODELS RESIN STEAM BOILER LOGGING
HOn3 BRASS DRGW UNITED SCALE MODELS TENDER TRUCKS NIB
KMP Models HO Scale Willamette Loader Steam Donkey Craftsman Kit NIB
O SCALE On3 On30 1 48 WISEMAN MODELS OKT 22 KLEIBER OPEN CAB FLAT BED TRUCK KIT
Sn3 Rio Grande Models LTD Disconnects 3324 Metal Scale Model Kit