Been there, done that, didn't sell well enough to continue.
It would probably make them laugh themselves sick, at least until Spyderco sold enough of them at that price to go broke. Then they'd really be happy.
You figure very wrong. Given the way costs have gone since the G-10 models were in production you're probably looking at closer to $50 - $75 to cover that upgrade. I seriously doubt you'll see a street price under $100 for a G-10 Endura, at least for a genuine one. You'll probably be able to pick up a Chinese knock-off for what you want to pay, though.
I dunno. Let's think about it for a minute. Let's compare the Delica, which is around $60-70 to... oh, let's say a Manix 2, which has a street price hovering right around $100.
So the difference is $30-40.
For the $30-40 difference, you get G10, S30V, and a more complex lock. So if you remove steel upgrades and lock from the cost, you're talking about G10 alone being an upgrade of less than $30-40.
I realize that's also a Japan made vs. USA made comparison, so let's go with something more apples-->apples...
S110v Manix 2 is around $115ish in FRN. Want the same exact blade with the same exact lock, made in the same exact place but this time with G10? Sure! there's the Blurple G10 model that comes in at $138 pretty much everywhere online. $23 dollar difference for G10 vs. FRN when everything else is the same. Actually if really want to be technical, the FRN model doesn't have skeletonize steel liners, and the G10 does. So considering that there is additional material and additional machining steps to make the G10 model, a simple materials swap might even cost less than $23.
Let's even look at something on the same production line as the Delica... the Dragonfly. Looking right now at knifecenter, the D-fly in FRN is $54. D-fly with G10 is $93. So a $39 difference. More than I projected, but still less than you projected. And while I have nothing to back it up, I believe the Delica outsells the D-fly by a pretty good margin, so when economies of scale come into play, the difference might become even less.
So now rather than just speculation, we have real solid metrics to work with. It looks like a jump from FRN to G10 costs somewhere between $23-39. So if an FRN Delica is a $65 knife, that puts a G10 Delica somewhere around $88 on the low end to $104 on the high end.
Work for you?