Every figure above comes from prices we observed ourselves on retailers’ public product data. A “real drop” means today’s best verified price is below the median we recorded for that product over the last 90 days — not that a store put a sale badge on it.

0 of the 42 products here currently meet our quality bar for search indexing. The rest stay visible to you but are excluded from search engines until they have enough verified offers and history to be genuinely useful.

How we calculate this

Where prices come from. We read the product data each retailer publishes on its own site, unhurriedly and within the rules that retailer sets. We never work around an access control and we never buy collected data of uncertain provenance.

What “verified” means. An offer can win best price only if it is inside our freshness window, matched to the exact variant, in stock, and free of an unresolved price anomaly. “Best verified price” means lowest among the fresh offers we track — not the lowest price on the internet.

How history works. Every price we observe is stored with its source and timestamp. Daily market low, median and high come from those observations, so the price history on this page is ours, not a retailer’s claim.

What we exclude. Stale offers, mismatched variants, bundles compared against single items, and prices that move implausibly without corroboration from another store.

Images. Product photographs come from the retailer they sit beside, loaded from their own image host. We do not re-host them and claim no rights in them.

Read the full methodology →

Serial Bus Servo prices and deals

Hiwonder HTS-21H 21kg.cm High-Voltage Anti-Stall Bus Servo for Robot Grippers HTS-21H

Hiwonder HTS-16L 16kg.cm Anti-Stall Serial Bus Servo for Robot Grippers HTS-16L

Hiwonder HTS-30HS 30kg.cm High-Speed Quadruped Bus Servo with Metal Arm/Horn Options HTS-30HS

Hiwonder HTD-30H 30kg.cm High-Speed Dual-Port Serial Bus Servo

Hiwonder HTD-85H 85kg.cm Dual-Shaft Bus Servo, Bracket & Metal Horn HTD-85H

Hiwonder HTD-85H 85kg.cm Dual-Shaft Bus Servo, Bracket & Metal Horn Metal Bracket

Hiwonder HX-65HM 65kg.cm Magnetic Encoder Bus Servo & U Frames HX-65HM

Hiwonder HX-30HM 30kg.cm 360-Degree Magnetic Encoder Serial Bus Servo

Hiwonder HX-10HM 10kg 360-Degree Magnetic Encoder Serial Bus Servo HX-10HM

Hiwonder HX-10HM 10kg 360-Degree Magnetic Encoder Serial Bus Servo Metal Servo Horn

Hiwonder HX-08LC 8kg Coreless Serial Bus Servo, 240°, Dual Shaft HX-08LC Coreless Serial Bus Servo

Hiwonder HX-08LC 8kg Coreless Serial Bus Servo, 240°, Dual Shaft BusLinker V3.0 Servo Debugging Board

Hiwonder HX-08LC 8kg Coreless Serial Bus Servo, 240°, Dual Shaft 7.4V 2200mAh Lithium Battery & Charger

Hiwonder HX-08LC 8kg Coreless Serial Bus Servo, 240°, Dual Shaft Large U-Shaped Bracket

Hiwonder HX-65HM 65kg.cm Magnetic Encoder Bus Servo & U Frames Big U Shape Frame

Hiwonder HTS-20H 20kg.cm High-Voltage Serial Bus Servo Metal Servo Arm

Hiwonder HTS-25L 17kg.cm 3-Connector Serial Bus Servo with Feedback

Hiwonder HX-35HM 35kg.cm 360-Degree Magnetic Encoder Bus Servo HX-35HM Servo Pack

How we read this category