Greenville Presbyterian Theological Seminary has a tuition waiver program. Contact the seminary for details (ask for Mrs. Kathleen Curto, Registrar).
GPTS is a confessional seminary (Westminster Standards) and they provide a solid affordable Reformed education in an area of the country where you can buy a house for less than $100K (rent is also cheap) and live on a single income very easily. There are no professors teaching deviant or questionable theologies here. A clear faculty statement exists on 6 day creation, justification and the federal vision. These men are serious and sober about the Gospel and very gracious despite what you may hear or read on the internet.
I would also mention that
MCTS for those Reformed Baptists (or even Presbyterians) is also very affordable and solidly confesssional (1689) with very good men like Sam Waldron, Rich Barcellos, Tom Nettles, Tom Ascol and others. It is a more unique seminary in that it is provided in the context of a local church. In this way there is a combination of solid scholarship (read
Dr. Waldron on anything) and practical spiritual apprenticeship.