Seagate BarraCuda 500 GB: price per TB and price history
Part number ST500DM009ASIN B01IEKG3TYBrand SeagateInternal 3.5"
The Seagate BarraCuda 500 GB (ST500DM009) is an internal 3.5-inch hard drive by Seagate with CMR recording. On amazon.com it costs $50.00 new, which is $100.00 per TB (as of Oct 27, 2026, 9:40 PM UTC). The TB index for internal 3.5-inch hard drives is $36.25 per TB.
Price per TB, New
Total $50.00 for 500 GB, cheapest new offer, excl. shipping
- 1 day
- 0.0 %
- 7 days
- ▼ 2.0 %
- 30 days
- ▼ 9.1 %
- 90-day low
- 79.98
90 days
Price per TB, Used
Total $29.00 for 500 GB, cheapest used offer, excl. shipping
- 1 day
- 0.0 %
- 7 days
- ▲ 7.4 %
- 30 days
- ▲ 7.4 %
- 90-day low
- 53.98
90 days
How much does the Seagate BarraCuda 500 GB cost per TB?
The Seagate BarraCuda 500 GB costs $100.00 per TB new on amazon.com. That is 2.8 times the TB index for internal 3.5-inch hard drives ($36.25 per TB). Among 79 new internal 3.5-inch hard drives it ranks number 69 by price per TB.
| Condition | Price | Price per TB | As of | Offer |
|---|---|---|---|---|
| Used | $29.00Oct 27, 2026, 9:40 PM UTC | $58.00 | Oct 27, 2026, 9:40 PM UTC | Amazon* |
| New | $50.00Oct 27, 2026, 9:40 PM UTC | $100.00 | Oct 27, 2026, 9:40 PM UTC | Amazon* |
Prices: cheapest offer per condition from all sellers on amazon.com (Amazon and marketplace sellers), excluding shipping, timestamp per row. At the top of its product page, Amazon often shows the featured offer from another seller, which can cost more. The button therefore opens the list of all offers. The price may have changed since the timestamp. If the Amazon app opens in another country's store, prices there differ: set the app to United States or open the link in your browser.
How has the price of the Seagate BarraCuda 500 GB changed?
Over the last 30 days the price fell by 9.1%, from $55.00 to $50.00. The 90-day low is $79.98 per TB ($39.99). It counts the lowest price that held for at least 2 days.
| Period | Change in price per TB |
|---|---|
| 7 days | ▼ 2.0 % |
| 14 days | ▼ 7.4 % |
| 30 days | ▼ 9.1 % |
| 90 days | ▲ 25.0 % |
Price archive since Jul 29, 2026, updated daily.
What are the specs of the Seagate BarraCuda 500 GB?
According to the Seagate data sheet, the Seagate BarraCuda 500 GB has CMR (conventional magnetic recording), 7,200 rpm and 32 MB cache. CMR suits RAID arrays and continuous operation.
| Spec | Value |
|---|---|
| Brand | Seagate |
| Series | BarraCuda |
| Part number | ST500DM009 |
| ASIN | B01IEKG3TY |
| Capacity | 500 GB |
| Form factor | 3.5" internal |
| Technology | HDD |
| Recording | CMR |
| Spindle speed | 7,200 rpm |
| Cache | 32 MB |
Source: Seagate data sheet
What are the alternatives to the Seagate BarraCuda 500 GB?
In the same series, the Seagate BarraCuda 8 TB (ST8000DM004) is cheaper at $33.00 per TB. At 500 GB, the Mdd Maxdigitaldata 5900RPM 500 GB (MDD500GSA859CCTV) costs $77.98 per TB.
| Product | Capacity | Price per TB | Recording |
|---|---|---|---|
| Seagate BarraCuda 500 GB | 500 GB | $100.00 | CMR |
| Seagate BarraCuda 1 TB | 1 TB | $98.96 | CMR |
| Seagate BarraCuda 2 TB | 2 TB | $108.45 | |
| Seagate Barracuda 3 TB | 3 TB | $38.33 | |
| Seagate BarraCuda 8 TB | 8 TB | $33.00 | SMR |
| Product | Capacity | Price per TB | Recording |
|---|---|---|---|
| Mdd Maxdigitaldata 5900RPM 500 GB | 500 GB | $77.98 | |
| WD Blue 500 GB | 500 GB | $98.80 |
Frequently asked questions about the Seagate BarraCuda 500 GB
Is the Seagate BarraCuda 500 GB cheap right now?
The price per TB is 25.0% above the 90-day low of $79.98 and 2.8 times the TB index for its product type (as of Oct 27, 2026, 9:40 PM UTC).
Is the Seagate BarraCuda 500 GB CMR or SMR?
CMR, according to the Seagate data sheet.
Related guides: Best NAS hard drive, CMR vs SMR, SSD vs HDD, Refurbished hard drives, Hard drive prices, Black Friday SSD and hard drive deals, Surveillance hard drive, RAID levels explained, Check hard drive health, How to partition a hard drive
Prices: amazon.com, timestamp per row. Specs: manufacturer data sheet. Calculation: How the TB index works. All offers Internal 3.5".