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Trends

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Platforms

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TI-99

TI-99 US Price Trends

$24.18

Current Avg CIB

+11.4%

24-Month Change

US

Price Trends

1979 – 1983

2.7M units sold

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Discover TI-99

$12.00

Current Avg Loose

125

Games

Market

Collection

1M

3M

6M

12M

24M

48M

Monthly Price History

Monthly Price History

Prices as of 01 Jul 2026

Typical $24.01–$24.15 (last 90 days)

Ø CIB

Ø Loose

Ø New

Smoothed

Log · Auto

Medians

Volume

Top Rising Games (24M)

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Top Rising Games (24M)

Addition and Subtraction 1

CIB: $6.58 → $96.18

+1361.7%

Yahtzee

CIB: $11.98 → $24.99

+108.6%

Munchmobile

CIB: $7.90 → $15.26

+93.2%

Congo Bongo

CIB: $20.00 → $35.73

+78.7%

Microsurgeon

CIB: $9.97 → $17.66

+77.1%

Return To Pirate's Isle

CIB: $24.95 → $43.08

+72.7%

Mind Challengers

CIB: $12.38 → $21.00

+69.6%

Space Journey

CIB: $33.00 → $55.48

+68.1%

TI-Writer & Word Processor

CIB: $23.03 → $38.50

+67.2%

Mini Memory

CIB: $43.89 → $72.97

+66.3%

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Top Falling Games (24M)

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Top Falling Games (24M)

St. Nick

CIB: $165.00 → $19.69

-88.1%

Video Games 1

CIB: $21.49 → $6.99

-67.5%

Tax/Investment Record Keeping

CIB: $19.78 → $7.92

-60.0%

M*A*S*H

CIB: $39.99 → $18.99

-52.5%

Editor Assembler

CIB: $80.00 → $39.03

-51.2%

Reading Fun

CIB: $11.00 → $5.95

-45.9%

Indoor Soccer

CIB: $28.49 → $15.55

-45.4%

Computer Math Games II

CIB: $30.78 → $17.82

-42.1%

Home Financial Decisions

CIB: $20.50 → $12.00

-41.5%

Sewermania

CIB: $51.83 → $32.98

-36.4%

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Average Price by Genre

Average Price by Genre

Accessories

$173.30

6 games →

Systems

$91.40

3 games →

Action & Adventure

$46.83

18 games →

Arcade

$41.12

32 games →

Shoot'em Up

$35.18

6 games →

Puzzle

$32.22

9 games →

Platformer

$27.79

3 games →

Educational

$24.23

42 games →

Sports

$16.67

3 games →

Other

$13.45

6 games →

All Games

All Games

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Peripheral Expansion Box TI-99 US box art

Peripheral Expansion Box

$713.20 (Complete)

Moon Patrol TI-99 US box art

$299.99 (Complete)

TI-99/4A System TI-99 US box art

TI-99/4A System

$165.00 (Complete)

Ant Eater TI-99 US box art

$148.48 (Complete)

Miner 2049er TI-99 US box art

$140.08 (Complete)

Program Recorder TI-99 US box art

Program Recorder

$124.98 (Complete)

Micro Pinball TI-99 US box art

$115.57 (Complete)

Soundtrack Trolley TI-99 US box art

Soundtrack Trolley

$109.99 (Complete)

Tris TI-99 US box art

$109.98 (Complete)

Addition and Subtraction 1 TI-99 US box art

Addition and Subtraction 1

$95.28 (Complete)

Popeye TI-99 US box art

$74.68 (Complete)

Shamus TI-99 US box art

$73.16 (Complete)

Mini Memory TI-99 US box art

$70.80 (Complete)

Ms. Pac-Man TI-99 US box art

$70.00 (Complete)

Q-Bert TI-99 US box art

$69.48 (Complete)

Frogger TI-99 US box art

$62.21 (Complete)

Speech Synthesizer TI-99 US box art

Speech Synthesizer

$60.75 (Complete)

Space Journey TI-99 US box art

$55.44 (Complete)

TI Extended Basic TI-99 US box art

TI Extended Basic

$54.98 (Complete)

Adventureland TI-99 US box art

$54.89 (Complete)

Princess and Frog TI-99 US box art

Princess and Frog

$51.39 (Complete)

Rabbit Trail TI-99 US box art

$49.99 (Complete)

Mission Impossible TI-99 US box art

Mission Impossible

$49.95 (Complete)

Treasure Island TI-99 US box art

Treasure Island

$49.95 (Complete)

Space Bandits TI-99 US box art

$46.24 (Complete)

Tunnels of Doom TI-99 US box art

Tunnels of Doom

$45.00 (Complete)

Moonsweeper TI-99 US box art

$44.00 (Complete)

Disk Manager TI-99 US box art

$44.00 (Complete)

Bigfoot TI-99 US box art

$43.52 (Complete)

Return To Pirate's Isle TI-99 US box art

Return To Pirate's Isle

$41.68 (Complete)

Jungle Hunt TI-99 US box art

$40.16 (Complete)

Pac-Man TI-99 US box art

$39.95 (Complete)

Editor Assembler TI-99 US box art

Editor Assembler

$39.03 (Complete)

Donkey Kong TI-99 US box art

$38.50 (Complete)

TI-Writer & Word Processor TI-99 US box art

TI-Writer & Word Processor

$38.50 (Complete)

Buck Rogers: Planet of Zoom TI-99 US box art

Buck Rogers: Planet of Zoom

$37.93 (Complete)

Meteor Belt TI-99 US box art

$37.51 (Complete)

Superfly TI-99 US box art

$37.37 (Complete)

Sneggit TI-99 US box art

$37.33 (Complete)

Early Logo Learning Fun

$36.10 (Complete)

Congo Bongo TI-99 US box art

$35.73 (Complete)

Computer Math Games III TI-99 US box art

Computer Math Games III

$35.44 (Complete)

Star Trek: Strategic Operations Simulator TI-99 US box art

Star Trek: Strategic Operations Simulator

$34.61 (Complete)

Sewermania TI-99 US box art

$32.98 (Complete)

4A Flyer TI-99 US box art

$32.98 (Complete)

BurgerTime TI-99 US box art

$32.90 (Complete)

Terry Turtles Adventure TI-99 US box art

Terry Turtles Adventure

$31.50 (Complete)

Reading Rally TI-99 US box art

$30.80 (Complete)