All the sets are $19.99, except for TAKANUVA which sells for $29.99. Here are the official names and numbers:

MAKUTA — Item 8593
GUKKO BIRD WITH JALA — Item 8594
PEWKU CRAB WITH TAKUA — Item 8595
TAKANUVA WITH USSANUI — Item 8596

Update: The phone number to call is:

According to MoD reader Rob, this is a “phone special” order line. It is not the regular 800 phone number for LEGO® Shop At Home, and you may not be able to order the above sets yet using the regular phone number. Thanks also to Kelly from BZP.