Are cheap Amazon rain covers as good as Osprey's?

For light to moderate rain, verified-purchase reviewers report budget covers from Joy Walker, Frelaxy, and Unigear perform comparably to name-brand options at a fraction of the price. The differences show up in sustained downpours, abrasion durability, and small details like reinforced attachment points and stuff pouches. Osprey's covers cost more but are widely cited for fit consistency across their pack lineup.