my guess is:

5c 16GB 1899
5c 32GB 2099?

5s 16gb 2199
5s 32gb 2499
64gb 2799

Apple is really smart and this is exactly Apple's style.
Did Apple ever say they are going to launch a Cheap iPhone?
It's all our guess. You want cheap iphone? go for ip4s 8GB.
Taking away ip5 and launch ip5c, this will stir up the market whereby a lot of ppl can "see" it instead of just drop ip5's price whereby no one realize it. I believe the case of ip5 is more costly, therefore with this strategic, they can save more even they drop the price.

Therefore if you prefer ip5, then either wait for the telco to drop the price and faster grab one.

btw from a lot of review, the plastic cover doesn't makes you feel "cheap"