At our Dollar Tree, they were in the aisle with all the makeup and cotton balls, etc, and were in the 2 packs for $1 each... works out to 50 cents per lip balm, and I couldn't ask for a better price than that! Hope that helps!
They were different than the lip balm available at dollartreedirect.com, so I guess they're in-store only? Let me know if you can't find them, and I'll get the brand name from home tonight! Actually, now that I'm thinking of it, I'm pretty sure they're made by Chap-Ex, and the packaging was blue with maybe a beachy pic?... the flavors were written on the top left and right corners by the hanger cutout...