Unfortunately the window of Switch consoles sold that are softmoddable (afaik) was very narrow and early on, about the first ~18 months of the console's life (and mind, it is 5 years old now). Most units of the standard console are not softmoddable, nor are any of the Lite or OLED units. Hardware mods exist for all of them.
Don't know the exact prices they're going for nowadays but if it's in good condition and you're willing to prove to the buyer that it's hackable, you can probably sell it for at least a bit more than what you originally paid for it.
I've been considering getting a second one for myself just in case my own first year console decides to kick the bucket (I already had to open it up to replace the joycon rails once)
