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

On30 Fat Albert Boxcar Conversion to fit Bachmann 18ft flat car
On30 Fat Albert Boxcar Conversion to fit Bachmann 18ft flat car
$37.00
Time Remaining: 1d 20h 51m
Buy It Now for only: $37.00
Bachmann On30 Scale Train 18 Freight Cars Low Gondola 2 box 26531
Bachmann On30 Scale Train 18 Freight Cars Low Gondola 2 box 26531
$69.24
Time Remaining: 2d 23h 55m
Buy It Now for only: $69.24
Bachmann On30 Scale Train 18 Freight Cars Box Car 2 per box 26501
Bachmann On30 Scale Train 18 Freight Cars Box Car 2 per box 26501
$91.82
Time Remaining: 2d 23h 55m
Buy It Now for only: $91.82
Bachmann On30 Scale Train 18 Box Car W Murphy Roof Gray 2 box 26553
Bachmann On30 Scale Train 18 Box Car W Murphy Roof Gray 2 box 26553
$91.82
Time Remaining: 2d 23h 55m
Buy It Now for only: $91.82
Bachmann On30 Scale Train 18 Freight Cars High Gondola 2 box 26541
Bachmann On30 Scale Train 18 Freight Cars High Gondola 2 box 26541
$74.51
Time Remaining: 2d 23h 55m
Buy It Now for only: $74.51
Bachmann On30 Scale Train Box Car South Pacific Coast Sunset Logo 27002
Bachmann On30 Scale Train Box Car South Pacific Coast Sunset Logo 27002
$45.91
Time Remaining: 2d 23h 56m
Buy It Now for only: $45.91
Bachmann On30 Scale Train Box Car Mineral Red Data Only 27098
Bachmann On30 Scale Train Box Car Mineral Red Data Only 27098
$45.91
Time Remaining: 2d 23h 56m
Buy It Now for only: $45.91
Bachmann On30 Scale Train Box Car Oxide Red Data Only 27097
Bachmann On30 Scale Train Box Car Oxide Red Data Only 27097
$45.91
Time Remaining: 2d 23h 56m
Buy It Now for only: $45.91
Bachmann On30 Scale Train Box Car White Pass  Yukon 27001
Bachmann On30 Scale Train Box Car White Pass Yukon 27001
$45.91
Time Remaining: 2d 23h 56m
Buy It Now for only: $45.91
Bachmann HOn30 Scale Narrow GaugeTrain Box Van Blue 77202 Thomas
Bachmann HOn30 Scale Narrow GaugeTrain Box Van Blue 77202 Thomas
$48.17
Time Remaining: 3d
Buy It Now for only: $48.17
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
$66.91
Time Remaining: 6d 15h 21m
Buy It Now for only: $66.91
HAWTHORNE VILLAGE On30 BACHMANN CONFEDERATE CIVIL WAR J E B STUART BOX CAR 005
HAWTHORNE VILLAGE On30 BACHMANN CONFEDERATE CIVIL WAR J E B STUART BOX CAR 005
$59.99
Time Remaining: 12d 2h 50m
Buy It Now for only: $59.99
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
$66.91
Time Remaining: 13d 11h 35m
Buy It Now for only: $66.91
BINKLEY KIT BUILT HOn3 NARROW GAUGE DSPPRR DENVER SOUTH PARK REEFER BOX CAR 605
BINKLEY KIT BUILT HOn3 NARROW GAUGE DSPPRR DENVER SOUTH PARK REEFER BOX CAR 605
$66.91
Time Remaining: 16d 14h 15m
Buy It Now for only: $66.91
A Plan For VIctory Box Car Bachman E Z Track Train Crossing HO Narrow Gauge NEW
A Plan For VIctory Box Car Bachman E Z Track Train Crossing HO Narrow Gauge NEW
$37.00
Time Remaining: 17d 16h 16m
Buy It Now for only: $37.00
ON3 ON30 SILVER CITY MODELS DRGW 1872 12 4 WHEEL BOX CAR KIT
ON3 ON30 SILVER CITY MODELS DRGW 1872 12 4 WHEEL BOX CAR KIT
$36.00
Time Remaining: 19d 17h 46m
Buy It Now for only: $36.00
Spectrum Bachmann 27635 ON30 Freight VENTILATED BOX CAR C  D NEW in Box
Spectrum Bachmann 27635 ON30 Freight VENTILATED BOX CAR C D NEW in Box
$49.95
Time Remaining: 19d 19h 35m
Buy It Now for only: $49.95
Spectrum Bachmann 27618 ON30 Freight VENTILATED BOX CAR DRGW NEW in Box
Spectrum Bachmann 27618 ON30 Freight VENTILATED BOX CAR DRGW NEW in Box
$49.95
Time Remaining: 19d 19h 50m
Buy It Now for only: $49.95
Spectrum Bachmann 27656 ON30 Freight VENTILATED BOX CAR BREAKWATER NEW in Box
Spectrum Bachmann 27656 ON30 Freight VENTILATED BOX CAR BREAKWATER NEW in Box
$49.95
Time Remaining: 19d 20h 27m
Buy It Now for only: $49.95
BINKLEY KIT BUILT HOn3 NARROW GAUGE DSPPRR DENVER SOUTH PARK REEFER BOX CAR 606
BINKLEY KIT BUILT HOn3 NARROW GAUGE DSPPRR DENVER SOUTH PARK REEFER BOX CAR 606
$66.91
Time Remaining: 25d 10h 48m
Buy It Now for only: $66.91
A Plan For VIctory Box Car Hawthorne Village Civil War Confederate Express NEW
A Plan For VIctory Box Car Hawthorne Village Civil War Confederate Express NEW
$49.99
Time Remaining: 26d 1h 13m
Buy It Now for only: $49.99

Other On30 Scale train items recently purchased through this site:

A Plan For VIctory Box Car Bachman E Z Track Train Crossing HO Narrow Gauge NEW
ON3 ON30 SILVER CITY MODELS DRGW 1872 12 4 WHEEL BOX CAR KIT
Stonewall Jackson Box Car Hawthorne Village Civil War Confederate Express NEW
Spectrum Bachmann 27635 ON30 Freight VENTILATED BOX CAR C D NEW in Box
A Plan For VIctory Box Car Hawthorne Village Civil War Confederate Express NEW
On30 Fat Albert Boxcar Conversion to fit Bachmann 18ft flat car
Spectrum Bachmann 27656 ON30 Freight VENTILATED BOX CAR BREAKWATER NEW in Box
Spectrum Bachmann 27618 ON30 Freight VENTILATED BOX CAR DRGW NEW in Box
Bachmann On30 Scale Train Box Car Oxide Red Data Only 27097
Bachmann On30 Scale Train Box Car Mineral Red Data Only 27098
Bachmann On30 Scale Train Box Car South Pacific Coast Sunset Logo 27002
Bachmann On30 Scale Train Box Car White Pass Yukon 27001
Bachmann On30 Scale Train 18 Freight Cars Box Car 2 per box 26501
Bachmann On30 Scale Train 18 Box Car W Murphy Roof Gray 2 box 26553
BINKLEY KIT BUILT HOn3 NARROW GAUGE DENVER RIO GRANDE DRGW BOX CAR WAGON 3145 n
Bachmann Spectrum 27636 Ventilated BoxCar Lawndale On30 Scale
Bachmann On30 Scale Train 18 Freight Cars High Gondola 2 box 26541
Bachmann On30 Scale Train 18 Freight Cars Low Gondola 2 box 26531
HAWTHORNE VILLAGE On30 BACHMANN CONFEDERATE CIVIL WAR J E B STUART BOX CAR 005
Bachmann HOn30 Scale Narrow GaugeTrain Box Van Blue 77202 Thomas
BINKLEY KIT BUILT HOn3 NARROW GAUGE DENVER RIO GRANDE DRGW BOX CAR WAGON 315 nd
BINKLEY KIT BUILT HOn3 NARROW GAUGE DSPPRR DENVER SOUTH PARK REEFER BOX CAR 606
BINKLEY KIT BUILT HOn3 NARROW GAUGE DSPPRR DENVER SOUTH PARK REEFER BOX CAR 605
BINKLEY KIT BUILT HOn3 NARROW GAUGE DSPPRR DENVER SOUTH PARK REEFER BOX CAR 603