Marvel Team-Up #81 (1979) — Valor de Gibi

Which version do you have?

For the absolute cheapest way to own Marvel Team-Up #81, grab the Newsstand version for $6. The Standard version at $5 is technically cheaper, but the Newsstand designation often implies a slightly different distribution or presentation, though in this case, the price difference is minimal. If you just want the comic, buy the Standard. If you are a dedicated collector seeking a specific variant, the Newsstand might be preferred, but for pure cost savings, the Standard is the way to go.