Amazon has the Langforth Genuine Leather/Canvas Vintage 14" Laptop Messenger Satchel Bag (Coffee) for $30 with free shipping. Measures 28cm x 5cm.
Has excellent Amazon Reviews.
Walmart has the Rockland Melbourne 20" & 28" Spinner Set (Charcoal Gray) for $68 with free shipping. List price: $90. Made of durable lightweight ABS. It features a polycarbonate construction, expandable design, and four 360° wheels.