That's crazy expensive. I rent for around $30-$40 (Canadian dollars). Booking several weeks in advance, mind you. I often rent over Saturday night to Sunday morning. The near by place doesn't open until 9:00 on Sunday for returns, so I rent at 9:00 on Saturday even though they are open at 8:00 already, so I can return it within the 24 hours. During certain peak season times, they about double the rate. At those times, I favor the co-op in which I have a membership.

Depends. I did take one from Avis roughly $70 for a whole day with some fee. But not all the time and again depends. I have AAA though. Just to be clear, for zipcar, one full day can be super expensive. Deals like $85 a day is seasonal (like Labor Day).

You get good rates at the weekend/holidays because they generally don't have enough parking spaces for all their cars so want them off the lot.

Zipcar usually has both and hourly and day rate. The day rate is typically something like $85 and the process of picking up the car is typically much easier than a traditional rental.

Don’t forget you have to add up taxes and other shitty fees. They come out like $100+ for Zipcar. Those $7.5 an hour deal is hard to get because they run out quick and then the ones left are far to pick up - at that point just call Uber or give up...