-1. I love being a razor whore. :D
I called it quits with a Rolls, two DE's and eight straights in regular use. I had to think this over for a bit. If it's in regular use it got there on performance, not price. The Rolls was free and it shaves me as well as the best. I just gave away one of my favorite straights; it cost $20 plus a professional honing. Most of the rest were well under 100 clams and they all charm me through every shave. The DE's? Easy - the more costly Gillette Slim is the best except when I use the less costly Merk 1904. In both cases with the safety razors I'd say my favorite edge is, coincidentally, one of the least costly per/100 count blades.
I cannot correlate cost and favoriteness.