Coral Cove on Nacodoches Rd. carries them and usually has them on sale. I highly recommend this place.
ive been getting mine from coral cove. its right down the street and they have great prices on copepods.
I'm about to place an order this weekend for a few thousand pods from Reefs2go. These pods are by far the best for your dollar. The tiny pods you get in the bottle are half dead and are usually cold water pods which I really doubt do much of any "seeding" in your tank. Let me know if you wanna go half on the shipping and we can arrange it. I think you get 2000+/- pods for $25. I have done about 3 orders with them, with only one order failing durng shipment which was replaced in a few days charge-free. Beware, these pods are freaking monsters.