The remastered (often by Steven Wilson) sets in book format are generally extremely good value.
I have quite a few of the Jethro Tull and Marillion sets.

Yes I know - 17 albums and the rest of the 35 (?)  is extra stuff.

There's a lot more than just the normal albumsx

The word  poignant, and the dates   , suggest Shelagh, but I  daren't wish.....

I have the Al Stewart one- still sealed. It was an impulse  buy and i have all of the albums,  some  of them more than once.

I have a very large collection of box sets which I am a bit obsessed with to be honest but rarely go for the type you mention. I prefer the career retrospective ones with loads of extra tracks. My favourites are the Sandy , Al Stewart and Ian Hunter ones. I have most of the Free Reed ones, and related.

The amazing Wet the Tea at Over Hulton Folk Club on Wednesday.  Big Andy, Adam and Fluff were on superb form.  A great night.

I don't think I've ever bought one.

I don't mind a reissue, if it's of good provenance, and might show some sonic improvement, and/or bonus material,  but I don't need anything beyond ordinary CD  and vinyl.

A box containing
Blu ray,  surround sound cuddly toy etc etc. , is of no interest to me.

Tonight it's Lucca Mae at the Adelphi in Hull, as Alan said nice to see an unfamiliar artist once in a while

I usually buy these , but then question myself why , even the Sandy Denny ones or John Martyn's One World and Solid Air , it is pretty rare to find a demo that you play more often than the finished version
I have the Joy Division ones , still sealed , ditto Led Zeppelin 3 and Houses Of The Holy

After all the bonus material is soon  available on You Tube - and the times you end up buying the original "as released" material - nobody seems to sell "disc 2 only" versions

The Beach Boys would be a case where I do go back to the demos, work in progress
, and I bet Jules does the same with The Who - so he's spot on  in his post , depends in how high a regard you hold a particular album or artist