Hello there guys, I need some help and/or insight on this: So currently I have an ebook selling decently well on clickbank. I'm thinking of adding more value to it by including a physical copy of the book on the upsell but I'm unsure whether it will actually harm or improve my profits. On one hand, adding it would improve my upsell rate + improve the product's value but I'm worried having a physical book will create a 2nd-market for my product. My product is a well brand-named ebook but I worry I will create a secondary market on ebay and amazon if I decide to give out a physical book as well. Ebay and Amazon results would definitely be in the top 10 of my search terms and there might go all of my profits. Any one with advice on this? Should I provide a physical book as well or no?