Fluxie (01-15-2013),GreatSeller (05-25-2014),HReesKees (08-05-2014),lindi000 (01-16-2013),sonicasdfasdf (08-24-2014),Symmetrical (01-12-2013),xxxN00Bxxx (12-23-2013)
Apparently it's no longer possible to change the email address registered with your Origin account through the regular Profile Settings anymore. Instead, you'll have to contact EA Support and/or a 'Game Advisor' for this from now on.
Therefore I suggest sellers will be changing the registered email address to a fresh email account prior putting the Origin account up for sale, so that the account can be sold together with the current registered email information.
As always, be sure to contact an Official MPGH Middleman!
Thanks to @Symmetrical and @lindi000 for the heads up
Fluxie (01-15-2013),GreatSeller (05-25-2014),HReesKees (08-05-2014),lindi000 (01-16-2013),sonicasdfasdf (08-24-2014),Symmetrical (01-12-2013),xxxN00Bxxx (12-23-2013)