Sounds like you got a great buy with that Payton for $150
That was a great offer they had on - I was nearly tempted to get some of their wool baseball jerseys. But they were still a bit too expensive for me.
As for finding the others, you should keep an eye on this guy:
http://cgi.ebay.co.uk/Mitchell-Ness-Dolphins-Dan-Marino-Throwback-Jersey-48_W0QQitemZ360023474066QQcmdZViewItemQQptZUS_Men_s_Athletic_Apparel?hash=item53d3123f92
Nick is 100% legit, I've bought from him a few times now. His prices are pretty high, but every so often he'll put some as an auction instead of buy it now. I've got a few things off him for under £60 in the past