How much roughly does it cost to have a deer hide tanned and how long does it take? Can they leave the hair on and take it off? How much for each thank you.

To tan a deer hide can go from $50 to $90 depending on the size of the deer, that is hair on tanning.
Hair off or buckskin varies from tanner to tanner, usually charged by the linear foot.

$35 each is what I paid for tanning 2 hides with the hair off.