No, it was one of the parts places like mowpart, just not sure if it was them. There's a ton of them! I do like mowpart though, I order most of my blades through them, and since you brought them up now I'm ordering blades for a few things, lol.
If you have a Walker, they sell 48" GHS blades by Oregon that are awesome, the lift sail is a little longer than the factory blades so they have a little better suction. Also blades for my 61" grasshopper, and both are nearly half the cost as buying them from the dealer.