The price really does matter on how many different IPs he wishes to protect and any other custom services.
The more regional servers you have the more it will cost. But once again Prolexic offers quotes based on what
the customer wants and you can dicker with them a bit. Essentially 1200 dollars for an IP or two is what it will
take money wise to get your foot in the door. 3-5 regional servers? double/triple it.
You're just talking about the mechanic of offering a security product. In reality, the product is worth as much as, or at least proportional to value of assets it protects.
In this case, WP should calculate what is a loss since there are no miners and act accordingly.
And again, it is difficult to hand out the money when the pool is small (and there is no plenty of miners). But the pool was huge and handing out such an amount of money is not a problem.
Unless someone thinks - that DDOS attack will go away someday. Miners, too.