Casio · G Shock 2100
Casio G Shock 2100 GA-B2100-1A
Updated sales through
Market price
$123
Median of 16 sales over 90 days
- 7 days—
- 30 days▼11% down
- 90 days—
GA-B2100-1A price history
Smoothed 30-day median sold price · each dot is one day’s sales
- Lowest day
- $50
- Typical day
- $123
- Highest day
- $150
- Sales
- 16
Market data
| Market price (90-day median) | $123 |
|---|---|
| Usual range (middle half of sales) | $100 – $140 |
| Lowest and highest sale | $50 / $150 |
| Sales in the last 90 days | 16 |
| Sales per week | 1.3 |
| Price change (7 / 30 / 90 days) | — / −11.3% / — |
| Median asking price | $145 |
| Asking vs sold | +17.6% |
| Most traded Casio rank | #20 |
| Most recent sale | Oct 20, 2026 |
Where sales land
- Middle half $100–$140
- Median $123
- Last 7 days $143
- 1 in 10 sold under $65
Monthly prices
| Month | Sales | Median | Change |
|---|---|---|---|
| October 2026 | 5 | $142 | ▲2.4% up |
| September 2026 | 7 | $139 | ▲114% up |
| August 2026 | 3 | $65 | ▼52% down |
| July 2026 | 1 | $136 | — |
For sale now
18 listings found, asking $100 to $240 · median $145
Recent sales
The latest completed sales
- Oct 20Casio Men's Analog Digital Watch G-Shock 2100 Series Alarm Strap GAB2100-1A$143
- Oct 18NEW Casio G-Shock TOUGH SOLAR Ana-Digi Smartphone Link Mens Watch GAB2100-1A$143
- Oct 15CASIO G-Shock GAB2100-1A Solar Bluetooth Black Band Watch - Open Box (Good)$100
- Oct 10Casio G-Shock GAB2100-1A Watch Solar Bluetooth Black Band$142
- Oct 7CASIO GA-B2100-1AER⎪GA-B2100-1A⎪G-SHOCK Classic⎪Black⎪BLUETOOTH⎪Tough Solar$123
Other G Shock 2100 references
All G Shock 2100
Similar money, other watches
Questions about the GA-B2100-1A
How much is a Casio G Shock 2100 GA-B2100-1A worth?
Recent sales put it at $123: that is the median of 16 sales over the past 90 days. Half of them sold between $100 and $140. Condition, box and papers, and the year of the set move a single watch within that range.
Is the GA-B2100-1A going up or down in price?
Down 11.3% over 30 days: the typical sale in the last 30 days was $123 (6 sales), against $139 (6 sales) in the 30 days before.
Is now a good time to buy a GA-B2100-1A?
Sales over the last 7 days (median $143) are above its usual range. Buyers are paying more than usual right now.
What is the lowest price a GA-B2100-1A has sold for recently?
The lowest sale in the last 90 days was $50, and one in ten sold below $65. Watches at the bottom of the range usually show wear or come without box and papers.
How easy is a GA-B2100-1A to sell?
About 1 sell every week. It is a liquid reference: priced near the median, it should find a buyer quickly.
How much are sellers asking for a GA-B2100-1A?
The median asking price for watches listed now is $145, 17.6% above what they actually sell for. Asking prices start around $100.
How does the GA-B2100-1A compare with the GA-2100-1A1?
The GA-2100-1A1 sells for a median of $80, $43 less than the GA-B2100-1A.
Data through Oct 20, 2026