I would guess it’s more of people like myself that have drooled over the idea of having a Tesla for years but haven’t ever been able to afford one. Once you hit $30K there’s a mass market of potential customers. My last new car purchase was a $33K Accord Hybrid Touring. If a used S would have been readily available I may well have bought one instead, knowing that the early S models have unlimited SC, and 8Y/unlimited warranty on DU and battery packs.
Maybe you hit on something, someone considering a 5 year old MS60 is likely comparing against a brand new M3 at $35K. While the S60 might have a few internal options over the M3, I think the issue is that people buying EVs buy then for EV features, range, acceleration, charging, battery age, warranty (since new tech and expensive to fix). Bottom line is that it's hard to find someone to pay $35K for a 2013 S60, but people selling are not moving either. So, maybe the floor price of used S we are seeing is based on very little volume - sellers not being able to sell but not willing to discount either? Just theorizing the possibility.
