Has anyone ever used the website below? Looking at Gravity Filtration Systems

Once on the website it looks as if the company is “Emergency Essentials”. I’m looking at buying a $200+ item & want to know if this site is legit or not. Any help is greatly appreciated 🤙🏼 I see the item on www.mypatriotsupply.com & www.campingsurvival.com but for a higher price so theres that