The issue is getting it covered by insurance. Otherwise it can cost over $1,000 for the full course of shots.
You can get costs down somewhat (half that) even uninsured with GoodRx.
Thanks for the recommendation! It seems like a good option, but afaict you still need to get your doctor to write you a prescription, and they may have to administer the shots as well:
https://support.goodrx.com/hc/en-us/articles/360000707483-Ho...