I wasn't able to find anything about your free talks on your web site, so please forgive my omission. I'm sure there are a lot of people here now planning the next few years of your life. ;)

As for the math here, I think your equation probably holds, but if you change the variables (lower the programmer's salary, decrease efficiency gains), you get some very different results. As with all things, YMMV.

I have worked in corporate IT (as a grunt and management in both Germany and the US) and have seen what often passes for training. At least with you (and uri and theDamian), there is a return on investment. Anyway, this is your bread and butter and people are free to not attend your courses if they don't want to, so who am I to pour gravel into your gears? We would all hire you if we had the money.

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Allolex