I have 55 chests atm from the Valentines Day promo, and I am in a small alliance that does not "coin" that much.

55 chests x $30 = $1,650.00

Figure there are probably 20 alliances on a server (a new one anyway) that coin in a similar fashion (though probably way more)...

20 x $1,650.00 = $33,000.00 for 1 promo within a 1 week time period. Multiply that by how many servers? 40? 50? You are looking at over $1 million for one promo (and that is probably the low-end of what is made). A pretty nice little haul for a 1 week promo

So yeah...if coining is dead I want to be the Grim Reaper.