I was going to ask about a "bundled package" deal for getting all three.
you should definitely do that. don't worry about ppl thinking you're out to "make a killing".....honestly, I don't care if you do mark it up. If its worth it. its worth it.
but I DO like:
1. convenience of getting all of em at once. Its just a annoying to have to do it all separately.
2. its nice to in the least "feel" like you're getting some discount for getting all of your wonderful hacks. ^^
3. its easier to sell. and no one would question it.
just my 2cents.