Could be the class of car you are checking for 6 pp…I assume you would need a minivan or full size SUV?
Booked multiple trips of 9 - 11 days last year, into February this year, using car rental savers to quickly check all the codes. Our rates averaged $180 to $380. Auto slash another option, hasn’t been producing for me.
We use Hertz as Gold for the perks & points (which you can accumulate using car rental savers/priceline). On the Gold Aisle, often can grab a small to medium size SUV, but have never seen a large one with a 3rd row on it. Rarely, is a mini van is sitting there.
Suggest you specifically book something by the “seat” for you needs.
it’s rather early for August, best rates I see tend to pop up starting as soon as 3 months out. However, it’s always a good idea to have a cancellable reservation as a placeholder IMO.