The CPSIA is RETROACTIVE for all products, though there is a stay of testing for certain product lines, but not a stay about proving your products fall below the lead & phthalates levels. In other words it doesn't matter when the items were made they still need eventual testing by an accredited lab, hence the uproar over pre 1985 children's books and the concern from thrift store about clothing & accessories unless they can prove on demand that the items falls below the regulated levels.
I would sugest that you read
http://www.cpsc.gov/about/cpsia/smbus/cpsiasbguide.html , since you are pressed for time. It explains the CSPIA in words that most can understand, it also has a table that gives proposed exempt materials, and a table of when what catergories of products must be 3rd party accredited lab tested by.
For many the stay gives them the time to retool to a line of products that can be used by teens & adults mostly but still would be bought by current customers for their children or to obtain certificates from their suppliers for their base supplies if not on the exempt list. Read
http://www.etsy.com/forums_thread.php?thread_id=6059311 .
It is possible that the shops that you searched have CPSIA as tags because thy already have the certificates from their suppliers or it could be as simple as they forgot to take CPSIA out of their listings on FEB 10, 2009 when the law went into enforcement.