When I went on TRT I was prescribed Androgel. At some point I asked him for a cheaper alternative since I was paying out-of-pocket. So he said "testosterone injections, and if you want to save more money you can inject yourself instead of coming into the office every two weeks". Shazam. The rest is history.
I've read the best way to find a local TRT clinic is to look up the local compounding pharmacies and call them asking for DR 's that use them for their scripts. You might get some push back but it's a contact sport if you know what I mean. Just be honest/sincere with them and they should help you out.