I don't think it's a scam, but I also don't think it's handmade. The shop info says it will ship from India. There are some nearly identical winder+swift sets on Amazon for double the price.

Edit: I found the Amazon listing for this exact product: https://www.amazon.com/Umbrella-Operated-Knitting-Crochet-Accessories/dp/B09X74F8TZ/ref=sr_1_29?keywords=yarn+winder+and+swift&qid=1670436763&sr=8-29&ufe=app_do%3Aamzn1.fos.006c50ae-5d4c-4777-9bc0-4513d670b6bc