Yeah if you've got an active server that you've had for a few months, send us a ticket when you order and I'll drop a free month into your account.
*rolls eyes* Is this how you play it?
You won't see anyone complain, but it's a bit of a 'cheap' way (it costs more for you to give free month hurdur).
It really happens a lot in a lot of situation, often ending up with one service/product/retailer not being able to afford an even lower price which will have cost them a lot in the end but it didn't have any effect.
Eventually causing the one who can't afford to go much lower to stop their service/product/whatever.
But yeah, it's still effective, especially if you have the resources to do things like that.