Amazon Prime Day ebike stuff

I noticed there's some ebike stuff on sale during Amazon Prime Day for today and tomorrow. Hubs, kits, throttles, lipo chargers, etc.

https://www.amazon.com/Ebike-Motor-Electric-Conversion-flywheel/dp/B08D3PNXKP/ref=sr_1_5?dchild=1&keywords=hub+motor&psr=PDAY&qid=1624288788&s=prime-day&sr=1-5

I ordered a new throttle thumb throttle off ebay the other day...looks like prime day has it for the same price, although I imagine shipping would be a lot faster.

https://www.amazon.com/BAFANG-Electric-Bicycle-Thumb-Throttle/dp/B091FN8N4K/ref=sr_1_19?crid=36ZNXIAVVP1YV&dchild=1&keywords=bafang+mid+drive+kit&qid=1624293850&sprefix=bafang%2Caps%2C344&sr=8-19

And I'm casually shopping for another mid drive to make an ebike for my father - this isn't a terrible deal: BBS02 with a 500C for $510 before tax (with the 5% off coupon). Would still need a battery, charger, and the brake sensors (and probably a narrow-wide chairing). They show sensors in the product photos but it's unclear how to select them. Anyways, with battery and charger needed it's probably better to just get a kit directly from another retailer.

https://www.amazon.com/BAFANG-BBS02B-Display-Electric-Conversion/dp/B07KYMSTMD/ref=sr_1_3?dchild=1&keywords=bafang%2Bmid%2Bdrive%2Bkit&qid=1624294028&sr=8-3&th=1&psc=1