It's the difference between a $250k and a $200k down payment. That said, shelter costs have more than doubled in real dollars over the last 25 years in my location, so 20% off the sticker price would only be a good start, not a good final state.

The most recent sale of a home near me was a completely unremarkable 100-year-old detached house for $2.6 million. This market has a lot of cooling it still needs to do.