[riemann42]

Can't help but chime in.

Reason's to pay less for an eBook

1. Rights restrictions and the DRM used to enforce them reduce resale value.
2. Often (but not always), quality is low for eBooks (OCR errors, less attention to detail, poor TOC handling).
3. Additional Equipment is required to view it (a book only requires eyeballs, an ebook requires a computer, phone, or other device).
4. Not having something to hold in my hand

So, let's put a number on those:

1. For DRM books, I'd say 20% off. This is about the resale value of a book.
2. Varies. On average, say 5% off, but often 0% off and sometimes the eBook is of such quality as to make it worth more than the physical book.
3. Negligible, as most people have equipment to do this, so let's say 5% off.
4. Luddite. No points for you.

So, for a $28 Hardback book, if you apply these one at a time:

1. $22.40
2. $21.28
3. $20.22
   

I would consider that a fair MSRP then for a new release eHard Back. Not that I ever pay MSRP...