It's funny you mention that because I have been looking for an SNG myself. It's been a little frustrating. Brand new price is right around $400.00. But so far just about every one I've seen for sale used is asking exactly that or even more. I have yet to see one for a reasonably discounted price due to use.
I don't get it. Why would anyone pay full price or more for a used one when they can get a brand spanking new one for virtually the same price or less?
I'll probably buy new unless something comes up here fairly quickly.
CC SnG's and DGG SnG's cost more... Digi blade coating will also cost more...
That $400 new price is for a Lego grip, tiger striped or stonewash blade.
Do I think new Striders are worth their sticker price? Yes, and no

I like the SnG design a lot for EDC, it has a lot of features I like in a EDC blade. So when I saw the very one I wanted, I paid full price $500 for my Digi camo double gunner ranger green SnG.
It's light, tough, has a hell of a grip, rides in the pocket great due to the weight and how thin the knife is.... The digi coating looks great, and protects the blade, as would stonewashed... (I have enough stonewashed, so I wanted something different)
If I didn't "want" that very one, then no the factory price is about $100 too high IMHO... But I am happy having the very one I wanted and also knowing that EVERY mark on her was made by me
I would start off with a used one at a good price, then decide if you like them. When or if your ready to buy a "keeper," buy the exact one you want. I'm glad I did, mine is about three years old and I still love it just as much as the day I received it. It's also one of the knives I would never give up, much like my BG42 large regular Sebenza, stainless Damascus Sebenza and my double lug large micarta 21. All super great EDCs, and will never see the exchange
(just know, most do have a little play... I don't care what anybody tells you

After a few months of use, they get the slightest movement, even Mick Strider says it's normal)