It is difficult enough to identify a carpet from photos but your photos are not very good and there are not close up of the back to try and identify the knot. Anyway I will give it a go.
5 Looks like a single knot Persian design Pakistan
6 Afghan, probably from the Herat region
7 Afghan Baluch
11 Looks like a single knot Persian design Pakistan
15 Looks like an Afghan Moshwani
17 Looks like a Baluch type Afghan. The auction price for this in Europe is about $200 but in a shop probably about $800
18 Could be a modern production Kazak but I think it is an Afghan again and auction value about $250 and shop price about $900
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