Without including weapons (1,000 credits per blaster), armour (though I'd love to know how much one set of Phase I armour costs), and DNA (I bet it cost the republic extra to have a famous warrior like Jango provide the genes), what did 20,000 clones cost the Republic?

A good answer will include an estimate of what training may have cost, however, please note that training would take place over roughly five years. Clones are battle ready at age ten, but are technically ten years old after five years due to their doubled growth rate.
How much would 20,000 cost?