You will need to run your own math. Car rentals vary widely due to what people will and won't book. You cannot use the math of someone who only rents from A when you're will to rent from B or C or have a special discount for D. As for rideshare estimates, you can pull up estimates using the rideshare app. Type in an address of where/ish you will be even if you don't have the exact location yet and your destination and you'll see estimates. Expect somewhat higher prices if trying to return right after nighttime shows.
The bravest of the money savers learn the local bus system as that is the cheapest transport in the area. Convenient? Not so much.
