In reply to Hat Dude:
With most tents I'd agree with you but that seems consistent with the whole modular philosophy. Paying extra for the bits you want is just the glass half empty way of looking at only paying for the parts you need.
Plenty of people considering a tent like this might already have a preferred set of pegs, or different sets for different needs, and not require any bundled in. Also trivial enough to make your own guy lines if you want and again people might have their own preferences.