Wow! Hard to find. Natchez Shooters Supply has 10mm in stock.
(Blazer is good range ammo; I shoot Blazer Aluminum by the case! If you buy it right at a place like Wal-Mart, it's cheaper than reloading. My own misfires have never been more than 2 or 3 rounds out of 1,000.)
It shouldn't be this difficult to find ammo! Makes me glad I use 45 acp.
ADDED: Nobody has mentioned to me that the G-29 is scheduled to go out of production; but, now, I'll start asking around to see if there's any truth to the rumor.