To do the comparison, I just went to Aircraft Spruce and tried to choose the cheapest instrument in each class I could find. I ignored issues like lighting, and whether the instrument is powered by electricity or vacuum. Obviously this will be an issue for all electric aircraft, and will increase prices for traditional instruments. There are also other features of the Dynon that I didn't attempt to find traditional instruments for, like clocks and volt meters, again due to laziness. Here is what I found:

This shows that using the cheapest, simplest, least functional instruments available from Aircraft Spruce, the Dynon is about the same price. Of course, I personally value the level of integration and ease of installation offered by Dynon over the traditional instruments, but others may not. YMMV. Comments and flames welcome!