Only you can decide whether it is worth it.
Here in the UK, it works out you pay £23 for the box, DVD, hardcover book and poster. On the surface of things, that seems reasonable - until you delve deeper.
The £22 for the digipack is probably overpriced to begin with...
The DVD is stereo, and will only appeal to a small minority of purchasers - Linear is simply a very arty (and sometimes boring/weird) moving artwork - not like a concert DVD you watch over and over.
The hardcover book is nicely presented and contains pictures and an interview. Will I read it again? I don't know - I've not read the HTDAAB book again since 2004. If you like interviews, it can be found online - as can the pictures.
The poster is okay, but as said above - is creased so the use is limited.
Of course they key here is whether it is worth more than the sum of its parts - and it is. I am happy given I paid £18 for it. Probably happy at £30 - but not £45. It is difficult to assess these things rationally, because we are fans and have an emotional connection. Sentimentally, I always the collectors editions but there comes a point at which my willingness to pay is breached.
I would not get into debt for it - unless you can make the economic rationale you can sell it on for a good price later.