Work out wan link cost instantly with clear inputs, formula shown and shareable results.
WAN pricing combines a bandwidth-dependent charge with a fixed circuit and access fee, so the effective cost per Mbps falls sharply as bandwidth rises — the fixed component is amortised over more capacity. That is why upgrading a small circuit often costs little more than keeping it, and why the per-Mbps figure is the right comparison metric across options.
WAN cost
per site = bandwidth x price per Mbps + fixed charge; total = per site x sites; effective per Mbps = per site / bandwidth
It is contended and best-effort with no bandwidth or latency guarantee. MPLS pricing includes a committed rate, an SLA and symmetric capacity.
It can substantially, by carrying most traffic over cheap internet circuits while retaining a smaller MPLS link or none at all for latency-sensitive flows.