Glad to see a lot of you from California. I'll provide some insight for my listings in the Bay Area.
I'm usually fully booked 3 weeks in advance. However, I don't think my prices are too low. Here's how I break down my prices:
Private bedroom, Shared bath, street parking: $63-66/night + $15 cleaning fee (2 listings of this)
Private bedroom, Private bath, street parking: $80-85/night + $15 cleaning fee
Private bedroom, Private bath, Parking on premise: $85-90/night + $15 cleaning fee
According to my data (of all listings that show up for 'San Francisco Airport'), 90% of the listings are Private bedroom, shared bath and street parking with about a total of 60-70 listings. This month, about 10-15 these listings remain unbooked on a daily basis. The other 10% of the listings which are private bed and private bath, they're always fully booked if they're under $105/night (including cleaning fee). Add in parking on premise, and it'll get booked out super early (I'm still experimenting with the best price for this listing).
What I do with the private bed and shared bath is I lower the prices if I have any single days remaining within the next 1.5 week. For private bath, I beat out my competition by $1/night if remaining within the next 1.5 week and if there is no competition remaining, I just jack up the price to $105/night (including cleaning fees).
I use this little tool to monitor my competition daily.