Paying the ~10€ would be enticing for some, but, so far, I've found all I need online and have seen the best (and many local favourites) of England, Scotland, Germany, Switzerland, South Africa, Tanzania, South Florida, Canada (East, West and Ontario). Even if I paid the money, I would still do a full online search to ensure I wasn't just seeing the most touristy spots.
Without knowing exactly what I'd get for the price, it's difficult to know if it's money well-spent or things I would see in a good guidebook, which I would buy anyway due to all the additional info (and, in some cases, dis-info!).
Good luck with it though. I've often thought of doing the same thing!