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 scale trains'.

S SCALE Sn3 WISEMAN MODEL SERVICES AHD 2 SPOOL LOGGING DONKEY ENGINE WINCH KIT
S SCALE Sn3 WISEMAN MODEL SERVICES AHD 2 SPOOL LOGGING DONKEY ENGINE WINCH KIT
$54.95
Time Remaining: 7d 3h 20m
Buy It Now for only: $54.95
O On30 On2 On3 Scale BANTA MODELWORKS 6090 Chillerys Cafe model kit
O On30 On2 On3 Scale BANTA MODELWORKS 6090 Chillerys Cafe model kit
$120.00
Time Remaining: 7d 12h 24m
Buy It Now for only: $120.00
O SCALE On3 On30 On2 BANTA MODEL WORKS 6150 Chillerys Cafe FRONT ONLY
O SCALE On3 On30 On2 BANTA MODEL WORKS 6150 Chillerys Cafe FRONT ONLY
$54.00
Time Remaining: 14d 6h 46m
Buy It Now for only: $54.00
O SCALE On3 On30 BANTA MODEL WORKS 6145 Doc Holidays Apothecary
O SCALE On3 On30 BANTA MODEL WORKS 6145 Doc Holidays Apothecary
$94.00
Time Remaining: 14d 7h 1m
Buy It Now for only: $94.00
HO Scale standard Narrow Gauge MODEL FORD INSPECTION CAR K129B KIT SSLTD
HO Scale standard Narrow Gauge MODEL FORD INSPECTION CAR K129B KIT SSLTD
$51.30
Time Remaining: 17d 13h 47m
Buy It Now for only: $51.30
F G scale BANTA MODEL WORKS 8122 Sonnys Used Cars
F G scale BANTA MODEL WORKS 8122 Sonnys Used Cars
$95.00
Time Remaining: 19d 17h 33m
Buy It Now for only: $95.00

Other On30 Scale train items recently purchased through this site:

S SCALE Sn3 WISEMAN MODEL SERVICES AHD 2 SPOOL LOGGING DONKEY ENGINE WINCH KIT
F G scale BANTA MODEL WORKS 8122 Sonnys Used Cars
HO Scale standard Narrow Gauge MODEL FORD INSPECTION CAR K129B KIT SSLTD
O SCALE On3 On30 BANTA MODEL WORKS 6145 Doc Holidays Apothecary
O SCALE On3 On30 On2 BANTA MODEL WORKS 6150 Chillerys Cafe FRONT ONLY
O On30 On2 On3 Scale BANTA MODELWORKS 6090 Chillerys Cafe model kit