Transfer-per-pay may be coming to World of Warcraft in the near future.
While trying to get into phone support for WoW, came across an odd recorded message saying something to the effect that character transfers are not yet available, and to keep watching worldofwarcraft.com for information on when this would be made available. (Subsequent attempts to call back in and transcribe the message exactly did not elicit the message again.)
After getting through to a service rep and dealing with my problem, I asked about that message and he said that they hope to have it ready “in the near future”, but that they want to make sure that it’s bullet-proof before it’s made widely available. It will be pay-for-transfer. Gold and goods should transfer with the character, but they’ve been having difficulty maintaining in-progress quest kills in the transfers. Also, I was surprised to hear that honor will be preserved, although the hidden honor “value” associated with each character will map to a possibly different honor rank on another server.