GOG insists it will "adamantly continue to fight for games with flat worldwide pricing," but if such a deal can't be struck with publishers, GOG will reimburse users. For now, that involves "$5.99 and $9.99 game codes," but reimbursement will eventually be given in store credit to be used toward any purchase. GOG says this will apply to "every single game where we do not have flat pricing," including the to-be-released Age of Wonders 3, Divinity: Original Sin and The Witcher 3.
While local currencies will still be introduced for regions that don't use the US dollar, users will be able to pick whether they want to pay with USD or their region's respective currency. GOG's switch off of regional pricing may delay or prevent the addition of certain games to its catalog, but the company says it will "remain true to its values and will keep on offering you the best of DRM-free gaming."