Can anyone confirm my concerns over Nexfill lip filler?

Hello. I have had Botox, cheek and chin filler in the last 5 years all by my usual DR who is a registered practitioner who uses teoxane or restylane however due to car problems I cant get to her&was going to go somewhere else for my first lip filler 0.7mm but this new place uses Nexfill - the price is cheap and they are not a registered practitioner. I see Nexfill is cheap to buy, made in Korea & not FDA approved so I cancelled, can anyone confirm my concerns or am I overthinking?