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Thames & Kosmos Sale Tracker, November 2026

Is Thames & Kosmos on sale?

No Thames & Kosmos deal is live right now. Deal.ai checks Thames & Kosmos prices at every store, and any deal shows here as soon as it starts.

Thames & Kosmos is a US publisher of hands-on science and engineering kits, known for detailed instruction manuals and kits built around real mechanisms. Its standouts include the Mega Cyborg Hand, a buildable hydraulic hand, and Gecko Run, a marble run that sticks to walls and glass. Deal.ai checks each product's price at every store and keeps its price history, so you can see where it has been cheapest.

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Thames & Kosmos prices today, and how low they've been

  • Thames & Kosmos
    Thames & Kosmos Mega Cyborg Hand STEM Experiment Kit
    Thames & Kosmos Mega Cyborg Hand STEM Experiment Kit$19.99 on Nov 4
Thames & Kosmos
Thames & Kosmos Gecko Run: Marble Run Starter Set
Thames & Kosmos Gecko Run: Marble Run Starter Set
$26.99 on Nov 4
  • Thames & Kosmos
    The Thames Kosmos Rock Tumbler
    The Thames Kosmos Rock TumblerPrices and history
  • Thames & Kosmos
    Thames & Kosmos Rock Tumbler
    Thames & Kosmos Rock TumblerPrices and history
  • Thames & Kosmos
    Thames & Kosmos Telescope
    Thames & Kosmos TelescopePrices and history
  • Questions and answers

    When does Thames & Kosmos go on sale?
    Discounts cluster around back-to-school season in late summer and the winter holidays, when retailers cut prices on STEM kits. Deal.ai tracks each kit's price history so you can see whether the current price is high or low for that product.
    Where is the cheapest place to buy Thames & Kosmos kits?
    It varies by kit. Large retailers and Amazon usually undercut specialty toy stores, but marketplace sellers can be higher. Compare the listed price at each store against the product's price history before buying.
    What are Thames & Kosmos's best-known products?
    The Mega Cyborg Hand is its best seller: a buildable hydraulic hand with adjustable fingers that runs on water pressure, no motor or batteries. Gecko Run is a reusable marble run that clings to smooth surfaces like walls and windows with suction pads.
    What age are Thames & Kosmos kits made for?
    Most kits are rated for ages 8 and up, and the Mega Cyborg Hand is recommended for 10 and up because of the assembly steps. Check the age range on each product page, since it differs by kit.
    What is Thames & Kosmos's return policy?
    Returns are handled by the store you buy from, not by Thames & Kosmos, so the window and conditions depend on the retailer. Keep the box and parts intact, since opened kits are often excluded from returns.
    Are there Thames & Kosmos discount codes?
    Deal.ai doesn't list Thames & Kosmos discount codes. It checks what Thames & Kosmos products actually cost at every store, so a real markdown shows on this page as a deal as soon as it starts, and each product's page has its price history to tell a sale from its usual price.