I will be flying into San Francisco on June 11 and returning on June 15th. I need a car definitely for 2-days (from June 11th, reaching San Francisco airport at 7.0 PM, to June 13th, can return the car around 5.0 PM), or can rent it upto June 15th, if the price is good. I can also pick up the car in San Jose,CA if there is a substantial saving. In San Jose, the pickup doesn't have to be at the airport. I searched couple of sites, the best price I got was 59 dollars per day (San Francisco), and higher in San Jose. I also bid on Priceline, but didn't get anything till 30 bucks. I will appreciate of someone can guide me on how to get better price, and where to look.

Why is it so high in San Francisco? Couple of weeks ago, my relatives rented a mid-size (I think) car in Las Vegas for 14 bucks (unlimited mileage), even though they booked only couple of days ( I would say about 10-15 days) before.

Thanks.

what happens in Vegas stays in Vegas.

If you don't need it the night you get in, consider renting it in the city (not at the airport) the next morning. You may save alot. Always consider renting at non-airport locations if your itinerary allows. Airport pick-ups mean added fees; airport drop-offs (with city pick-up) do not.

You can take BART into town from SFO for not much $.

Having a car in town each day of your stay, unless you absolutely need it each day, is a hassle. Very pricey parking fees, vs cheap and good public transport.

If you could do without renting the car upon arrival you could rent from somewhere close to the airport instead and save a good deal. For an upcoming trip I found a two day rental at Dollar Rent A Car, 1815 Bayshore Highway, Burlingame for $54.12 for two days. They are not open late afternoons though.
Dollar Use Burlingame instead of SFO when you search. San Jose shows $30.90 plus tax per day.

Call Enterprise and ask about their weekend rates at the local places. Get quotes from a few as they can really vary! Some will allow the deal for up to 5 days. You should be able to get 50% off and there is a coupon in the Entertainment book for a free day. They will even bring you the car.