100PCS PC817 EL817 817 817C DIP-4 Optocoupler FL817C PS817C Chipset
Quick answer
Is $2.79 a good price for 100PCS PC817 EL817 817 817C DIP-4 Optocoupler FL817C PS817C Chipset?
No: $2.79 only undoes a recent increase. On Oct 21, 2026 it cost $2.79, then on Oct 23, 2026 it rose to $2.95.
$2.79
Today it costs $2.79 on AliExpress. Since Oct 21, 2026, when we started tracking it, it ranged from $2.79 to $2.95.
Heads up: this price went up before it went down. On Oct 21 it was $2.79; on Oct 23 it rose to $2.95. Today it is back at $2.79: the "drop" only undoes the increase.
View on AliExpressThe price above is the last recorded reading, not a live checkout lookup.
Price history
Today$2.79lowest ever seen
Lowest$2.79since Oct 26
Highest$2.95Oct 23 to Oct 26
Tracked since Oct 21 · 2 changesHover over the chart to see each price.Tap the chart to see each price.
See every price change
| When | Price | Change |
|---|---|---|
| Oct 26, 12:03 UTC | $2.79 | −5% |
| Oct 23, 09:03 UTC | $2.95 | +6% |
| Oct 21, 05:36 UTC | $2.79 | start |
| Store | YXSHENG Electronic Store |
|---|---|
| Product rating | — |
| Store rating | — |
| AliExpress category | Electronic Components & Supplies › Active Components |
| Recorded readings | 3 |
| First seen | 10/21/2026 |
| Last reading | 10/27/2026, 2:03:22 PM UTC |
Also sold by 1 other store
Same title and category on AliExpress, cheapest first. Each store has its own price and history; check the variant and shipping.
| YXSHENG Electronic Store | $2.79 · 346 sold |
|---|