Yes if you can go to another doctor that'd be the best thing to do. If you're uncomfortable you don't HAVE to say "I want to be prescribed proscar because it's cheaper than propecia" nor do you have to tell them you're going to see another doctor as they won't know you saw a doctor originally that turned you down.
Go to the new doctor and say you have some concerns about hairloss, tell them whether or not if it runs in your family, ask if he/she thinks it could be a thyroid issue. Then say you've been doing some research on the internet and you plan on doing the "Big 3" (you can explain if he asks, might as well educate a doctor since most are clueless on this stuff) and ask if he can prescribe the 5mg finasteride pill which will help reduce costs and you will cut it 1/4ths or 1/8ths or whatever. Don't say proscar since you can get the generic for $72, but generic is only available in the 5mg pill.
It was a major pain to get my doctor to prescribe this only because she is not that competent and couldn't understand so I had to be very descriptive about this. She didn't mention anything about fraud but I told her I wasn't going to claim it on insurance but rather just pay the retail price at the pharmacy.
I was actually just going to buy the generic Indian made stuff (Finast or Fincar) from
http://www.hairpharmacy.com, as I was using the generic 1mg pill for about 6 months prior, but Cassin convinced me to just try to get it from the doctor here. Hairpharmacy is part of UP and I never had a problem with them nor heard of any, and Dr. Reddies and Cipla are reputable pharmaceutical companies in India and never heard of an incident of a fake generic finasteride (fake Propecia a different story due to the high markup). I did a TON of research on this before buying from an overseas, no-script requiring, online pharmacy to buy some Indian made pharmaceuticals to the point where I'd feel comfortable doing so.
Either way you should be able to get some finasteride to reduce your DHT and help your hair grow!