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'.

Bachmann Spectrum On30 27017 Freight Box Car Bachmann 175th Anniversary NEW
Bachmann Spectrum On30 27017 Freight Box Car Bachmann 175th Anniversary NEW
$49.99
Time Remaining: 1d 19h 57m
Buy It Now for only: $64.99
Bachmann Spectrum On30 27618 Freight Car Ventilated Box Car D
Bachmann Spectrum On30 27618 Freight Car Ventilated Box Car D
$42.99
Time Remaining: 1d 20h 3m
Buy It Now for only: $56.99
Bachmann Spectrum On30 27635 Freight Car Ventilated Box Car C
Bachmann Spectrum On30 27635 Freight Car Ventilated Box Car C
$42.99
Time Remaining: 1d 20h 5m
Buy It Now for only: $56.99
Bachmann Spectrum On30 27656 Freight Car Ventilated Box Car B
Bachmann Spectrum On30 27656 Freight Car Ventilated Box Car B
$42.99
Time Remaining: 1d 20h 7m
Buy It Now for only: $56.99
BINKLEY KIT BUILT HOn3 NARROW GAUGE DENVER RIO GRANDE DRGW BOX CAR WAGON 15 nd
BINKLEY KIT BUILT HOn3 NARROW GAUGE DENVER RIO GRANDE DRGW BOX CAR WAGON 15 nd
$73.03
Time Remaining: 7d 11m
Buy It Now for only: $73.03
BACHMANN HAWTHORNE VILLAGE CIVIL WAR COLLECTION THE JEB STUART BOX CAR
BACHMANN HAWTHORNE VILLAGE CIVIL WAR COLLECTION THE JEB STUART BOX CAR
$39.90
Time Remaining: 7d 9h 49m
Buy It Now for only: $39.90
BACHMANN HAWTHORNE VILLAGE CIVIL WAR COLLECTION NORTHERN LIGHTS BOX CAR
BACHMANN HAWTHORNE VILLAGE CIVIL WAR COLLECTION NORTHERN LIGHTS BOX CAR
$29.00
Time Remaining: 7d 11h
Buy It Now for only: $29.00
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
$73.03
Time Remaining: 8d 16m
Buy It Now for only: $73.03
BACHMANN HAWTHORNE VILLAGE CIVIL WAR COLLECTION GENERAL ROBERT E LEE BOX CAR COA
BACHMANN HAWTHORNE VILLAGE CIVIL WAR COLLECTION GENERAL ROBERT E LEE BOX CAR COA
$39.00
Time Remaining: 8d 4h 10m
Buy It Now for only: $39.00
BACHMANN HAWTHORNE VILLAGE CIVIL WAR COLLECTION STONEWALL JACKSON BOX CAR
BACHMANN HAWTHORNE VILLAGE CIVIL WAR COLLECTION STONEWALL JACKSON BOX CAR
$39.00
Time Remaining: 8d 13h 2m
Buy It Now for only: $39.00
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: 8d 16h 3m
Buy It Now for only: $59.99
Bachmann On30 Scale Train Logging  Mining Cars V Dump Cars 3 per box 29802
Bachmann On30 Scale Train Logging Mining Cars V Dump Cars 3 per box 29802
$63.65
Time Remaining: 10d 12h 55m
Buy It Now for only: $63.65
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
$73.03
Time Remaining: 14d 3h 27m
Buy It Now for only: $73.03
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
$73.03
Time Remaining: 19d 5h 52m
Buy It Now for only: $73.03
BINKLEY KIT BUILT HOn3 NARROW GAUGE DSPPRR DENVER SOUTH PARK REEFER BOX CAR 603
BINKLEY KIT BUILT HOn3 NARROW GAUGE DSPPRR DENVER SOUTH PARK REEFER BOX CAR 603
$73.03
Time Remaining: 20d 8h 33m
Buy It Now for only: $73.03
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
$73.03
Time Remaining: 20d 23h 51m
Buy It Now for only: $73.03
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
$69.49
Time Remaining: 23d 8h 52m
Buy It Now for only: $69.49
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: 23d 15h 26m
Buy It Now for only: $36.00
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: 27d 10h 4m
Buy It Now for only: $37.00

Other On30 Scale train items recently purchased through this site:

ON3 ON30 SILVER CITY MODELS DRGW 1872 12 4 WHEEL BOX CAR KIT
On30 Fat Albert Boxcar Conversion to fit Bachmann 18ft flat car
Bachmann Spectrum On30 27635 Freight Car Ventilated Box Car C
Bachmann On30 Scale Train 18 Box Car W Murphy Roof Gray 2 box 26553
BACHMANN HAWTHORNE VILLAGE CIVIL WAR COLLECTION NORTHERN LIGHTS BOX CAR
BACHMANN HAWTHORNE VILLAGE CIVIL WAR COLLECTION THE JEB STUART BOX CAR
Bachmann Spectrum On30 27618 Freight Car Ventilated Box Car D
Bachmann Spectrum On30 27656 Freight Car Ventilated Box Car B
Bachmann On30 Scale Train Logging Mining Cars V Dump Cars 3 per box 29802
Bachmann Spectrum On30 27017 Freight Box Car Bachmann 175th Anniversary NEW
HAWTHORNE VILLAGE On30 BACHMANN CONFEDERATE CIVIL WAR J E B STUART BOX CAR 005
BACHMANN HAWTHORNE VILLAGE CIVIL WAR COLLECTION GENERAL ROBERT E LEE BOX CAR COA
BACHMANN HAWTHORNE VILLAGE CIVIL WAR COLLECTION STONEWALL JACKSON BOX CAR
BINKLEY KIT BUILT HOn3 NARROW GAUGE DSPPRR DENVER SOUTH PARK REEFER BOX CAR 603
BINKLEY KIT BUILT HOn3 NARROW GAUGE DSPPRR DENVER SOUTH PARK REEFER BOX CAR 606
BINKLEY KIT BUILT HOn3 NARROW GAUGE DENVER RIO GRANDE DRGW BOX CAR WAGON 3145 n
BINKLEY KIT BUILT HOn3 NARROW GAUGE DSPPRR DENVER SOUTH PARK REEFER BOX CAR 605
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 15 nd