[goblinfoblin]

I think it might be a pretty small group of people that know about bootstrap but don't/can't figure out how to use it, and will pay $59-79 dollars for an ebook.

$25 is a reasonable price for ebooks with a large amount of useful content but won't get impulse buys.

$5-10 will get impulse buys but you might not get as much money in aggregate.

$59-70 is ridiculous for any book, to me that is like textbook pricing.

I personally probably would've bought it in the $5-10 dollar range even though I know bootstrap and find the documentation easy to understand.

Best of luck.

Edit: I never made it to your $29-39 ebook pricing which might grab more people, might want to show that there are 2 options better (2 columns maybe).