For me it's 2 hours of work, but to be fair I do not enjoy making gold in WoW so for me WoW Tokens are a justified purchase. But I won't disparage other people their choices not to buy them. Because I have no interest in the 'best' ways of making gold, like playing the AH or farming valuable things, I prefer to spend my limited game time doing things I enjoy like dungeons, raids and PvP. The limited "passive" income from those sources isn't great; for me to make 250k in-game would take me WAY WAY longer than 2 hours.