actually roasting coffee is a lot more economical. than buying at the store.
learning to roast= you will screw up a lot of coffee and burn the flavor out of it, but you'll enjoy that you made it so much you'll drink it anyway.
for some of the best coffees in the world you can buy 22lb boxes for 135-200$,
if you just want to buy coffee to roast elsewhere i've seen prices from 3.50/lb- 7$ a pound there abouts.
i rooted out a high quality supplier and trust they know what they're doing... and just buy only from them.
i was selling coffee briefly for 26$ / 14oz bag..