If you have enough in game gold, and your account is inactive, you should be able to resub the game during the character selection screen by choosing to pay for sub using in game gold.

Has anyone tried it?

Current cost should be around 47000 gold for 30 days.

Do you have the problem of unable to purchase more token as the game keep saying you already have the maximum number of tokens?

thankfully many americans rather pay money for in-game gold than farming gold for free sub.

As long as you have multiple max level toons, currently it is not difficult to get the market rate of 40K gold in a month. However, Legions may change the dynamics of the game and inflate the prices of everything, or it may not. Long term wise, It is hard to predict what effect Legions will have on the token price because it is all up to Blizzard how they want to hand out free gold to the players.

In the near future though, I think the token prices may falls for a bit within the first few weeks after Legions goes live. It is possible that lots of American players will simply want to pay cash to buy more in game gold in order to buy mats for professions and to gear up. It is best to be prepared with stash of gold now to buy them while they are cheap.

This is assuming you are on the American servers. European and Taiwan servers have way more expensive token prices.

Nowadays it is mainly about getting free game time.