I don't think it's wrong to buy new enlargers, as we must support these companies who are still making great products, whether they're expensive or not.
I myself wouldn't buy a used enlarger, as I plan on building my own darkroom in a few years, and thinking about the future, these will be a great option, when the rest of the enlargers will be for parts on the used market.
I inicially only want to enlarge from 35mm film, so I will look for the Beseler Printmaker 35, or the Kaiser VP350, and dont think the price is absurd. The Printmaker can be had for $400, without a lens.
In regards to lenses, I do intend to buy used ones, as they're considerably more available. An El-Nikkor 50mm f/2.8N is really sharp, and is less than $150 on ebay, for a near Mint copy.
Rodagon lenses are super expensive, and even used ones run for a lot more than El-Nikkors.