Cheaping out on batteries

[Monstermaker]

I have an RXV. It’s only used around my yard and up and down my street, less than a mile.
I don’t need much range at all, I’d never use 5 miles worth.
My batteries are original and just about completely toast. (2015, four 12-volt).

For my specific application I’d like to just throw in four cheapo 12 volt so-called marine or RV batteries.

The problem is from what I can tell, just about all available ones are absolute garbage and are shot within a year and a half or so.
That makes shelling out $1000 for four Crowns or Trojans seem the more economical choice in the long run if I can get five years out of them, even though I don’t need all that capacity. It sucks to have to buy that much battery when I really don’t need it.

Has anyone here tried this and have any words of wisdom?
This is basically a lifespan-per-dollar question, with no regard for range more than a couple miles.