Ok so with quite aggressive hair loss at a young age then you should really consider Fin and minox as they will give you a fighting chance to retain the hair you have got. Dr Bisanga/BHR gave you very good advice.
Forgot the cheaper Turkey options for a hair transplant. Sounds like you already dodged a bullet by doing some research.
Personally I would not be relying on Revalid/or similar or PRP. Consult with some more elite clinics and Iβm sure they would also be recommending the same as Bisanga. Namely try meds and review in 6 months to a year.
You have the option of topical Fin too. Its got to be worth a try or you could spend a lifetime chasing your hair loss. We cannot rely on family genetics to tell where we might end up.