Postage: Large Manila Envelope (10.4 oz) from Nebraska to UK

USPS rates for a large envelope/flat (10.4 oz) to UK:

• First-Class Mail International: $14.50 (no tracking, 10–20 business days).
• Priority Mail International: $26.75 (tracking, 6–10 business days, insurance up to $200).

Must meet "flat" dimensions (max 15" x 12" x 3/4"). Over 15.99 oz → package rates. Use Click-N-Ship or post office for exact pricing.