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

HO HOn3 WISEMAN MODEL SERVICES OT5413 MACK AC LONG WHEELBASE LOG TRUCK
HO HOn3 WISEMAN MODEL SERVICES OT5413 MACK AC LONG WHEELBASE LOG TRUCK
$26.95
Time Remaining: 2h 29m
Buy It Now for only: $26.95
HARTFORD PRODUCTS FOUR 1203 SCALE ARCHBAR TRUCKS 26 DIA WHEELS
HARTFORD PRODUCTS FOUR 1203 SCALE ARCHBAR TRUCKS 26 DIA WHEELS
$178.00
Time Remaining: 11h 30m
Buy It Now for only: $178.00
On3 On30 O CRAFTSMAN NATIONAL MOTOR Co 1912 MODEL T COKE REA EXPRESS TRUCK KIT
On3 On30 O CRAFTSMAN NATIONAL MOTOR Co 1912 MODEL T COKE REA EXPRESS TRUCK KIT
$34.95
Time Remaining: 2d 9h 32m
Buy It Now for only: $34.95
O or On30 scale Logging Truck handcrafted and weathered after historic picture
O or On30 scale Logging Truck handcrafted and weathered after historic picture
$149.00
Time Remaining: 2d 10h 34m
Lot of 2 BLACKSTONE HOn3 B370110 DRGW UTLX 48 Bettendorf Tank Car Trucks
Lot of 2 BLACKSTONE HOn3 B370110 DRGW UTLX 48 Bettendorf Tank Car Trucks
$33.99
Time Remaining: 3d 49m
Buy It Now for only: $33.99
On30 Built 1940s Truck by FineTrains O Scale On3
On30 Built 1940s Truck by FineTrains O Scale On3
$29.99
Time Remaining: 3d 7h 35m
On30 O scale Logging Truck after historic pictures custom weathered lot 1
On30 O scale Logging Truck after historic pictures custom weathered lot 1
$138.00
Time Remaining: 3d 11h 1m
Historic Logging Truck custom weathered O or On30 scale lot 6
Historic Logging Truck custom weathered O or On30 scale lot 6
$89.00
Time Remaining: 4d 12h 53m
Buy It Now for only: $89.00
O SCALE 1 48 WISEMAN 1912 MODEL T FORD REA EXPRESS TRUCK KIT NM 910 NMC
O SCALE 1 48 WISEMAN 1912 MODEL T FORD REA EXPRESS TRUCK KIT NM 910 NMC
$29.95
Time Remaining: 5d 3h 45m
Buy It Now for only: $29.95
On30 or 0 scale Logging Truck for diorama custom weathered lot 7
On30 or 0 scale Logging Truck for diorama custom weathered lot 7
$78.00
Time Remaining: 5d 7h 56m
O scale On30 scale Logging Truck custom weathered after historic pictures
O scale On30 scale Logging Truck custom weathered after historic pictures
$115.00
Time Remaining: 5d 7h 56m
On30 or O scale Logging Truck custom weathered and built after historic picture
On30 or O scale Logging Truck custom weathered and built after historic picture
$146.00
Time Remaining: 5d 7h 56m
On30 or 0 scale Logging Truck custom built and weathered after historic picture
On30 or 0 scale Logging Truck custom built and weathered after historic picture
$148.00
Time Remaining: 5d 7h 56m
Old Ford Logging Truck custom weathered lot 4  O SCALE  ON30
Old Ford Logging Truck custom weathered lot 4 O SCALE ON30
$118.00
Time Remaining: 5d 7h 56m
O On3 On30 1 48 WISEMAN T 201 202 208 NASH QUAD CLOSED CAB STAKE BED TRUCK KIT
O On3 On30 1 48 WISEMAN T 201 202 208 NASH QUAD CLOSED CAB STAKE BED TRUCK KIT
$114.95
Time Remaining: 8d 5h 56m
Buy It Now for only: $114.95
ON30 RAIL TRUCK CONVERSION KIT MOW CAB FITS BACHMANN RAIL TRUCK
ON30 RAIL TRUCK CONVERSION KIT MOW CAB FITS BACHMANN RAIL TRUCK
$27.00
Time Remaining: 8d 10h 32m
Buy It Now for only: $27.00
ON30 RAIL TRUCK CONVERSION KIT FREIGHT CAB FITS BACHMANN RAIL TRUCK
ON30 RAIL TRUCK CONVERSION KIT FREIGHT CAB FITS BACHMANN RAIL TRUCK
$27.00
Time Remaining: 8d 10h 32m
Buy It Now for only: $27.00
O On3 On30 WISEMAN MODEL SERVICES TOPPINS TRUCK UNIT WITH FORDSON POWERPLANT KIT
O On3 On30 WISEMAN MODEL SERVICES TOPPINS TRUCK UNIT WITH FORDSON POWERPLANT KIT
$79.95
Time Remaining: 10d 3h 7m
Buy It Now for only: $79.95
O Scale Logging Truck custom weathered hand crafted from historic pictures
O Scale Logging Truck custom weathered hand crafted from historic pictures
$118.00
Time Remaining: 10d 6h 17m
Buy It Now for only: $118.00
On30 Bachmann Passenger Trucks 2 axle NIB 29902
On30 Bachmann Passenger Trucks 2 axle NIB 29902
$26.99
Time Remaining: 10d 9h 37m
Buy It Now for only: $26.99
ON30 RAIL TRUCK CONVERSION KIT PASSENGER CAB FITS BACHMANN RAIL TRUCK
ON30 RAIL TRUCK CONVERSION KIT PASSENGER CAB FITS BACHMANN RAIL TRUCK
$27.00
Time Remaining: 13d 11h 16m
Buy It Now for only: $27.00

Other On30 Scale train items recently purchased through this site:

Lot of 2 BLACKSTONE HOn3 B370114 DRGW 48 Arch Bar Refrigerator Car Trucks
On30 Built 1940s Truck by FineTrains O Scale On3
HOn3 Micro Trains Line MTL Archbar Trucks Brown 10 Pair NIB 005 25 000
6 pair Bachmann Vulcan Freight Trucks On30 29905
ON30 RAIL TRUCK CONVERSION KIT PASSENGER CAB FITS BACHMANN RAIL TRUCK
Lot of 2 BLACKSTONE HOn3 B370110 DRGW UTLX 48 Bettendorf Tank Car Trucks
On30 O scale Logging Truck after historic pictures custom weathered lot 1
ON30 RAIL TRUCK CONVERSION KIT MOW CAB FITS BACHMANN RAIL TRUCK
O On3 On30 1 48 WISEMAN T 201 202 209 NASH QUAD RAG TOP CAB STAKE BED TRUCK KIT
HARTFORD PRODUCTS FOUR 1203 SCALE ARCHBAR TRUCKS 26 DIA WHEELS
On30 Bachmann Passenger Trucks 2 axle NIB 29902
On30 or O scale Logging Truck custom weathered and built after historic picture
HOn3 BRASS DRGW UNITED SCALE MODELS TENDER TRUCKS NIB
O On3 On30 1 48 WISEMAN MODEL SERVICES MODERN VERSION LOG TRUCK CONVERSION KIT
O On3 On30 WISEMAN OKT 08 KLEIBER CLOSED CAB LONG WHEELBASE FLAT BED TRUCK KIT
O On3 On30 1 48 WISEMAN MODEL SERVICES EARLY VERSION LOG TRUCK CONVERSION KIT
O On3 On30 WISEMAN MODEL SERVICES TOPPINS TRUCK UNIT WITH FORDSON POWERPLANT KIT
O SCALE 1 48 WISEMAN 1912 MODEL T FORD REA EXPRESS TRUCK KIT NM 910 NMC
On3 On30 O CRAFTSMAN NATIONAL MOTOR Co 1912 MODEL T COKE REA EXPRESS TRUCK KIT
O or On30 scale Logging Truck handcrafted and weathered after historic picture
SN3 4 TOMALCO DRGW LONG CABOOSE W TRUCKS COUPLERS BRAKE DETAIL AND DECALS
O On3 On30 1 48 WISEMAN MODEL SERVICES T 201 202 NASH QUAD STAKE BED TRUCK KIT
O On3 On30 1 48 WISEMAN T 201 202 208 NASH QUAD CLOSED CAB STAKE BED TRUCK KIT
O scale On30 scale Logging Truck custom weathered after historic pictures
O Scale Logging Truck custom weathered hand crafted from historic pictures