I have had a look around on the forum and on Google but I can't find a definitive answer on how much postage I need to include on a SASE which I am sending to the US from the UK.
I have no access to IRC's or US stamps so I am just sending dollars! I see some people say $3 is enough but then when using USPS calculator I get $6.39 for:
Large Envelope, weight 0 lb 1.7637 oz (0.050 kg) to United Kingdom (Great Britain and Northern Ireland)
Can someone give me some advice on how much I need to include as this my first TTM autograph attempt and I have read so much my head is swamped!
Thanks very much!

![UK [uk]](./images/smilies/flag_uk.gif)