I am not sure if this is the correct place to ask this question. I hope it is.

I purchased the print copy of this book about two months ago. Since then I was given the Kindle as a gift. I was wondering if I could prove I have the print version (somehow, I no longer have the receipt) that I could get the e-book for free or deeply discounted. I would love to read this on my new kindle, but I would hate to buy this book twice (I do however like what I have read so far).

Thanks