Oneida offers the Anchor Hocking 8-Piece Glass Kitchen Storage Set for $8.99. Coupon code "FEB15" cuts it to $7.64 and grabs free shipping. (Kmart charges a few cents more with in-store pickup.) That's the lowest total price we could find by $25, although we saw it for slightly less last August. They're constructed of tempered glass and include BPA-free plastic lids.
Cooking Depot via Amazon offers Prime members the Lodge 6-Quart Cast Iron Camp Dutch Oven, model no. L12CO3, for $39.30 with free shipping. (Non-members can spend $49 or more to qualify for free shipping; otherwise, shipping costs $13.03.) That's the lowest total price we could find by $20. The lid can be used as a griddle.