When you're buying fashion brands there's gonna be a little trade-off in terms of quality, that's fine.
However, some of the recent margielas have been very, very poor quality and ridiculously inflated price. It's shocking to me to see how much they've cashed in on hype.
Some of the things i've noticed about them:
shitty upper leather
cardboard or some type of fibreboard insoles
really really thin soles (although this is part of the design so not really an issue).
Keep in mind i'm a bit of a shoe nerd so I like a lot of shoes for historical/construction reasons in the same way that denim nerds like raw japanese selvedge stitched by himalayan monkeys, when APC NS have inferior quality but are still fine and the styling/cut is more important for most people.
Again, value is relative so if you like them then that's great.