
Save the money. Roma Pass does not return enough for the price.
€36.50 (48h) / €58.50 (72h)
Worth it if you'll hit several paid sites fast and ride a lot of transit — it gives free entry to your first one or two sites (skip-the-ticket-line, not skip-the-security-line) plus unlimited buses and metro. If you're mostly seeing free piazzas and churches, you won't break even.