Some people like to carry all their reading material in their phones or tablets.
Others prefer the feel and aroma of the printed page.
If you're a person who can see the benefit of both,
you can get both the printed copy
a digital copy
(PDF, ePub, .mobi, or RichText)
for $15 off the individual price of both.
There's a yahbut - yahbut, you have to tell me about it so I can apply the discount.
(the one PayPal knows you by)
YOUR POST OFFICE MAILING ADDRESS
YOUR EMAIL ADDRESS
and tell me you're buying both (and which format of digital you want)
and I'll have PayPal send you an invoice.