I know what you mean! keeping something up to date is really difficult (about to publish the 2nd edition of my first book / tutorial) - I’ve found that having something ready to go to the printers needs to be changed the day before. The “bad” part of such rapid improvement, I guess
I am thinking the reason the kindle is the same price is because Packt gives you a DRM-free version (last I checked), and they’re encouraging people to sign up for the subscription (seems to be the business model with tech publishers).
Anyway, I hope you enjoy it. As mentioned, I’ll follow up and see if I can find a discount code. I also know they’ll be asking me soon for reviewers, so if you are up for that, stay tuned…