All I know is to keep checking back. That or ask the store mgrs when/if they'll be getting any in.
Or let us know which ones your looking for specifically and someone may be able to help you out. Check other boards and see where they are being spotted and what figures are being spotted where might help as well.
http://www.joecustoms.com/forums/viewforum.php?f=10 for one has a lot listed and where they are being found. Don't know if you have Tues Mornings around but SOME have been spotted there as well. Marshall's (same company as TJ Maxx as well.