I’m not going to ‘out’ you, but given the information you’ve presented here, like sdr, I think I can tell which one is yours on sdlookup. It looks like you should expect to negotiate that price. Rather than asking a buyer to justify his offer, you simply have two choices:
1. counter
2. don’t counter
I live in CV, and I’d agree with you that sfr pricing here is resilient (unlike condos), but time will tell.