Chicken and ground beef are always on sale some place. Fattier cuts of meat are sometimes a bargain too.

Cheaper cuts of beef can be made very tender by slow cooking them in a crock pot, or in the oven at a lower temp for a longer time period.

Just before and after big holidays like Easter, Christmas etc, turkey and ham go on special. Stock up to cook later.

For veggies, we are nearing gardening time. If you don't have a vegetable garden, plant lettuce, radishes etc in your flower garden . Lettuce makes an interesting short term border plant. If you stagger the seeding a week apart, you can have fresh lettuce all summer without it all coming up at once. Cucumer is a great way to fill up a hard to plant space. The plant vines fill up the space quickly with greenery.