Looking to buy an inactive Guild for alts, but don't know the best way to do it.

Saw in the past that instead of folks simply buying the guild charter and chasing people for 4-5 signatures, that folks bought inactive guilds for gold.

Now that guilds are both cross faction and cross realm (still region restricted), wanted to know what is the best suggestion to find an inactive guild and perhaps what a fair price would be. Of course would be great if they didn't care and would give it to me, but at the same time wouldn't know how to value it.

Figure going to a high pop realm and spamming chat could work, but the question of value would pop back up.

Appreciate any suggestions on the best route to take.