I'm sure the answer to this question is "it depends", but I'm looking for general guidelines on pole barn pricing.

This website seems to be less than $10/sq foot ($20k for a 40' x 60' structure).  Is this generally in line with industry standards?  I'm just trying to figure estimated costs in order to determine a basic budget for a small farm/homestead.

http://www.polebarn.com/cost/