Amazon has the Nestle NIDO Fortificada Dry Milk, 3.52 Pound Canister for $12.54 - 5% off via Subscribe & Save = $11.91 with free shipping on $25+ or with Prime. Has excellent Amazon Reviews.
Walmart has the Joovy Caboose Stand On Tandem Stroller (Appletree only) for $70 with free shipping. List price: $144. Features 3-way reclining seats, rear bench and standing platform, snack tray with two cup holders.
Walmart has the Graco Modes 3 Essentials LX Travel System (2048723) for $145 with free shipping. List price: $60. Features storage basket, removable arm bar, parent cup holder and phone holder, SnugRide SnugLock 30 rear-facing car seat.