A lot of people are unhappy about the price increase, but I wonder if they're really paying attention to what things cost these days.
I generally use prepainted plastic minis (mostly D&D minis), but I paint metal minis as needed for specific PCs, NPCs, and monsters for which I want something special or can't get what I need from DDM.
This year I took a shopping list of half a dozen or so items to Gen Con. Most decent-quality, unpainted metal minis cost me at least $5 each; some were $10 or even more. Unpainted. Single minis.
Prices go up. Nothing costs the same as it did five or ten years ago. These new DDM prices may be more per mini (I suspect they're actually a better deal for most of us, on the basis of how much we're paying per mini that we actually want, but that's a separate issue), but they're still a pretty good deal in the grand scheme of minis pricing.