Hi there Mkov,
welcome to Coffee Snobs.
Afraid your retailer is not full of the best information this week.
Given the choice there is no way I would buy either of the 2 Isomac grinders even at $175.00 cheaper than the Rocky. If you compare them side by side and maybe even grind some coffee with them, youll see what I mean. They are not in the same class.
Also, try the site sponsors here to the left of screen. Not everyone is out of them, I saw new doserless rockies in someones window a couple of days ago.
Goodluck in the hunt!