I used them, they are very conservative on their dosage and your levels. In my case, they were happy with my level being in the 800's, yet I didn't really feel that much better. With the cost being 200 a month and driving to one of their facilities every fucking week for an injection, it wasn't worth my time. Look into
https://www.royalmedicalcenters.com. About the same cost, but they ship the supplies to you and you do the injection yourself (its easy). They still do blood work and check your levels and make sure everything looks good. At 200mg per week, my levels are usually around 1300-1500.
https://www.chicagolandmenshealth.com/ is another company guys use that I work with and they ship the supplies to you as well. I'm all about doing the injection myself and not wasting hours out of my day going to an office for them to give me the jab when I can do it myself.