You can buy Proscar and cut it into quarters. This is what i have done these past 10 years.
You can just get it online here with promocode "GET10" :):)
Yeah one of my issues with seeing a derm about getting propecia is the fact they want me to come back every 6 months for no real reason other then to get money from me. So every 6 months for the rest of my life I have to pay to see a derm to get the prescription for a drug that is life long?