how reliable is kits4less.com for glp1 research?

i am 34f and have been managing a slow weight loss stall over the past six months while keeping up with four strength sessions a week. my diet is high protein and well tracked, and my latest bloodwork with my doctor came back completely normal. my physician originally wrote me a prescription for a glp1, but my insurance flat out refused to cover it due to recent policy changes, which pushed me to look into sourcing compounds online for my own research.

i spent the last two weeks reading through different forum discussions and comparing a handful of research suppliers. this site keeps getting brought up for affordable glp1 options, but i want to make sure their third party lab testing and batch purity are legit.