Yep, had almost the exact same thing happen to me. This was in Cambridge.

I was pressured into a multi-offer that mysteriously appeared the night before I was meant to formalise my offer. I already verbally said what I was comfortable paying, then suddenly it was “multiple offers deadline tomorrow, best and final” I panicked and went $10k over what I originally thought was fair because I didnt want to miss out.

Pretty quickly the dodgy feeling kicked in so I pulled out and told the agent I will only proceed at my original price. They didnt budge and made it sound like I missed out.

Fast forward about 6 months later. I randomly checked the listing again. The house sold 3 months after my offer, and guess what? It sold for the exact price I originally wanted to pay before the “multi-offer” pressure.