Thanks for the specifics taking the time to help, and I appreciate all the replies. There is a lot to learn. I am new to honing and have finally been able to get a decent shave from a few junk razors I picked up. I have been working with rusted metal knives and scissors since I was a kid. My new hobby is straight razors. I still have a lot to learn. Thanks againEhh, I don't think they really go for that much more... but there are caveats, at least with vintage razors (you did mention auctions, assuming vintage isn't a stretch). Sometimes the wider razors do seem to go for more, but it's not even the width per se. For example, the classic W&B 7/8 "chopper" with it's smiley swept apex and spine in good shape will often command a premium over the later W&B "arrow" razors. The earlier razors are older (thus more valuable), some of the oldest specimens predated plastic scale materials (horn, shell, ivory, and bone scales are more valuable), and the overall appearance is more iconic. Width is part of the appearance, so I do think it matters.
On the other hand, take a 3/4" Genco blade in good shape from the early 1900's. It will have a tough time selling for even in the same ballpark as a 5/8" Klaus Tornblom (or probably any Swedish razor) of the same era. 5/8" French razors will often command a premium over the Sheffield razors, even the heavy bladed "choppers," with period and condition being similar. Why? Were the French or Swedish razors that much better? No... I would argue the French razors were no better than Sheffields and the Swedish razors could be, but were not always. No, these razors command a premium because of supply side economics. Sheffield cranked out cutlery back in those days. The French and the Swedes could make razors and knives of great quality, but they simply could not match the output of Sheffield. More razors made in 1890 = more specimens available today in decent shape = greater supply = generally lower prices.
So... higher blade width =/= higher price. There are a lot of other factors at play, at least with vintage razors (which is more of what I know about).