I don't recall exactly what I ended up paying for my last 2 bricks of .17Mach2 but it was a GREAT deal. I actually bought 2+ bricks at a Dicks Sporting Goods store in Plymouth, MA. I was just poking around in the sporting goods section and I noticed they had it on an unannounced sale for CHEAP!! IIRC it was $2.96 per box of 50 rounds. I bought a couple of full bricks and all of the loose boxes they had, everything they had in stock. When I got to the register they gave me another % off my total purchase!!
I don't have any problems locating .17 Mach2 ammo here in New England, it seems I can always get it when I want it, but like CW, I buy it whenever I see it on sale.
IF in the future they discontinue .17 Mach2 ammo your gun could always be reamed out to .17 HMR. That caliber will not be going away for sure.
You would also have the option of having the barrel rechambered to one of the .17 caliber centerfire cartridges....<><....