Do clients care about organized PSD's?

Spoofing over some threads here at TFL i see people recommend this person some others that... etc. (other general threads and not just someone liking someone)

Now i've taken over, modifying, adding on to, final products delivered(by alot of 'designers' here) and it has always been been shit. (sorry for offending someone but their work sucks in terms of organizing layers and keeping psd's clean and un-merged layers)

I just like to see from the buyers perspective how they feel about it. Would you pay another $20 to have nicely organized PSD files (1-2h, that is what i spend on colorcoding my layersets and naming every single layers, sometime over 500 easly).

thoughts?

(I dont't care if the work sucks or not, it's more of the flexibility to edit things in the design)