Everything looks slightly mismatched, needing tuning, etc. Two of the bikes are missing rear derailleurs. Mismatched wheels. Anodized wheels showing brake track wear.
And, as mentioned above, most of the bikes appear to have been rebuilt at some point with mid-range components.
If the seller is a "mechanic", and has time and patience, he is probably better off stripping the bikes, and selling them off piece by piece on E-Bay (including international shipping to the USA). It may take some patience.
Or, if he wishes, pick out a couple to do a full restoration to "new" condition on.
What are the shifters on the LOOK?