Where to find a heart Doppler ?

Kayla • TTC 2016-2019 Baby #1 born 1/14/2020❤️❤️🥰 Baby #2 born 2/23/2021 💜💜🥰

I am looking to find a Doppler but I can’t find one other then on the website “baby doppler” but I just wanna make sure that is not a scam website and get feedback on where you all have gotten yours looked in Walmart and amazon no luck! TIA