Where to buy Radiation Alert Ranger?

Hello, everyone! I am relatively new to the hobby and I am incredibly interested in buying an SE International Radiation Alert Ranger. I found a link to one abit cheaper than buying from somewhere like Grainger (or SE Intl directly) and I was curious if anyone knows anything about this site/has direct experience buying from them? (if the site is indeed not trustworthy, does anyone know where I could buy a Ranger?) Thanks for any help!

Link: https://www.geigercounters.com/Ranger/?srsltid=AfmBOorSrWAK84DcOlp6DuFOprMzTdI4RzTweL8L6U6_5kafKRK4cHn1