selling coil runs and primals

[Ashkendor]

Given that 90% of a server population can't make that much gil from crafting or selling kills themselves, coming across players dropping 20mil, 30mil, 100mil on a kill, it's pretty clear where that gil has come from, even if I've not been told by those doing the selling, or friends of the buyer, that the gil was purchased.

I'm pretty sure you pulled that 90% figure straight out of your hind end. It's not hard to make the 500k-1mil that most people charge for the EX primal clears. Hell, Savage Might IV materia are 400k+ on my server. Spiritbond and get a single one of those and you're most of the way there. There's plenty of ways to make gil that don't involve RMT. People that don't have the gil either 1) don't know how to make it, 2) don't have the time to make it, or 3) don't have the inclination to make it. It's as simple as that. This game is easy to make money in.

Maybe i70 spiritbonding is better these days, but not everyone has enough friends to spam t4 to make it worth the time investment

What? Solo queue T4. Even as a DPS it's almost never more than a 5 minute wait.

I get 50-60% tier IV from i70 items.