I'm with the last poster. I travel so I don't have to be looking for a place too late in the afternoon. I start looking for RV park signs around 3:30. I use RV Parky app on my phone as it shows prices of nearby RV parks along with services available. Very handy.
What I look for mainly is Wifi. Then 50 amp, then room for the slides, than W&S. In that order. I'm pretty self contained and can go 10 days without dumping or getting water. And I can use 30 amp easily too.
I also scout on the internet the night before travel and hand write short descriptions of RV parks along the way. Including bail out areas or POIs. So if my phone or GPS mapping goes haywire, I still have something.
Many of the parks I stay at are Passport America parks so I pay 1/2 their usual rates but typically, while traveling, $25-$35 is the expected daily rate, and what I look for. Weekly and monthly rates are usually better but not always. If they aren't I move to another park.
You should be aware that I've been seeing many inferior parks raising their rates to 'Resort' prices these days. I'm also seeing big investment companies buying smaller parks, almost doubling their rates, without making anything other than cosmetic improvements. It's getting frustrating that an old park that last year was only $25/nite is now $49/nite with no improvements, or just marginal improvements in services like Wifi. Seeing that a lot as I traveled this past year. I have to hunt for low cost parks a lot more than I use to.