Several factors should be considered prior to purchasing a kiln.  Issues such as energy costs, constant overhead costs of operating a dry  kiln, and lumber availability all play a critical role in the process of  considering the purchase and installation of kiln equipment. 
A situation often encountered by "end use" manufacturers is inability to  buy what they need, when they need it, and the way they need it. In  short, the general market cannot furnish the necessary material. First  and foremost, lumber operations dry lumber for one basic reason . .  .profit. 
Consequently:
*If the cost of drying lumber - including all the related expenses ,  such as sticking, handling, storage, etc.-- is lower than the additional  value created through a secondary manufacturer (such as furniture  manufacturing, steam bending operations, flooring manufacturers, etc),  profit is created. As some manufacturers require lumber that is  specially dried for their unique needs, material purchasing costs  frequently increase when uncommon products are required. Though the  market will almost always supply a resource on demand, cost factors  ordinarily increase when products vary from the norm.
External structural factors can also effect your profitability,  in both the short and long term. Several variable factors are as  follows:
Though kiln operators can and should prepare for the unexpected, unforeseen future considerations beyond the control of the kiln operator make it impossible to operate a kiln profitably.