Actually, both are price fixing, and illegal in my country (France). When a manufacturer advertises prices, the small type reads "price generally seen in most stores" or some much, because manufacturers can't enforce pricing through resellers, and thus can't assume their "recommended" prices will stick. Actually, "recommending" a price is frowned upon. IIRC, Apple has a clever way to enforce uniform pricing anyway.

In the same way, several competitors can't get together to agree on prices indeed.