At current prices multiplied by up to 1.5, the world uranium supply will last about 90 years at current consumption rate.
If you increase consumption by replacing oil and coal plants with uranium, it will be gone in a very much shorter time.
Also using fission for energy production is at the moment barely profitable when you leave most environmental concerns out of the cost structure.
Without subsidising no new nuclear plant could compete with a wind water solar mix (even with the trouble of temporarily storing energy for peak uses).
With higher priced Uranium i have no idea, why anyone would want to build one.
Oh and if you think of nuclear reprocessing, that's even more expensive.