Cost of custom calculators

[d b]

I've seen lots of the Construction Calc and Heavy Calc. They're stoutly made and do the easy functions. The keys aren't click and rotate but I've not heard complaints about them failing. I don't know of any that are programmable but I haven't played with the new smart phone apps from Calculated Industries. Many companies buy them for formen who can scream but not think. They fill a nitch.