I think Skeleton Records is still going in Oxton Road, Birkenhead.
But if there aren't any of the renowned rare ones don't expect a lot of money for them - you can pick them up in bulk from charity shops for silly cheap.
Have a look on DISCOGS
to get an idea what is achievable but you won't get that locally from a dealer.
Gumtree them individually or together? Or try listing them here on WikiWirral.