ChefLand 3-Compartment Microwave Safe Food Container with Lid/Divided Plate/Bento Box/Lunch Tray with Cover, Black, 10-Pack for $13.19. Cheapest price on amazon ever.
Choose no-rush shipping and get $5.99 Prime Pantry credit.
http://www.amazon.com/dp/B00PY032QK/?tag=cl03f-20