Want a wheelie/rideout bike and this caught my eye, dude wants 700 for this bike, if I can get him down to 500, is this a steal?

https://www.bicyclebluebook.com/value-guide/2019%20SE%20Racing%20Beast%20Mode%20Ripper%2027.5%2B?condition=VERY_GOOD

This shows the value in very good condition with original specs. Modifications may add some value; but the market for used bikes is currently really soft (though who knows what’ll look like in 6 months).

I would suggest looking online for new bikes like that. I see them on sale for 400ish all the time