How much would you pay for submission to a directory if the homepage is pr1 pr2 pr3 pr4 pr5 pr6 If the owner just bought that domain so the internal pages don't have pr? Thanks!
I would base what I'm willing to pay on more significant factors than just the home page PR. It's too easy to just buy an expired domain with PR that will probably be useless after an update or two.
If none of the pages were indexed/cached/PR except the home page, I might submit if it was free, but I doubt I'd pay a fee to be listed. Especially if it were an expired domain.