Office & Books › School supplies
DIY STEM Automatic Ball Serve Machine Kinetic Energy Transfer Experimental Pole Science Education Toy Educational Teaching Prop
Quick answer
Is $2.89 a good price for DIY STEM Automatic Ball Serve Machine Kinetic Energy Transfer…?
Too early to tell: DipScout has tracked this price for less than a day, and comparing it with a typical price takes at least 7 days. Tracked since Nov 4, 2026, the price hasn't changed.
$2.89
Today it costs $2.89 on AliExpress. Since Nov 4, 2026, when we started tracking it, the price hasn't changed. We haven't tracked it long enough yet to say whether it's on sale.
We have tracked this product for less than a day; confirming a drop takes at least 7 days. The store advertises "was $6.61", but that is the store's own claim; we only state discounts our price history proves.
View on AliExpressThe price above is the last recorded reading, not a live checkout lookup.
Price history
$2.89
We started tracking this price on Nov 4. The chart takes shape over the days: we only draw prices we observed.
| Store | AYX Garden Supplier Store |
|---|---|
| Positive feedback (AliExpress) | — |
| AliExpress category | Office & School Supplies › Educational Equipment & Supplies |
| Recorded readings | 1 |
| First seen | |
| Last reading |