Cheap respecs in the beta
The latest WoW: Forever build adds a highly requested change: talent resets are much cheaper. If you have not recently changed your talents, a respec now costs just 1 silver. This applies to the beta only.
After your first reset the price of the next one rises sharply and drops back to 1 silver after an hour. During that one-hour cooldown the next respec costs five gold, so consider whether you need to switch again within the hour.
If you have not recently changed your talents, the cost is now 1 silver to re-spec. This is temporary for the Beta only. After your first talent reset, the subsequent cost will be much higher, but it will drop to 1 silver after 1 hour has passed.
Meant for experimenting
The low prices invite you to test different talent combinations during the beta. Once the game fully launches, prices are expected to return to their normal levels.
Original report: Wowhead