Some may be comparing low tier to high tier batteries here.
Walmart sells 3 tiers of the flooded lead acid Everstart, the "value" generally around 69.99 for the lowest tier 1 year warrantied, then theres the 2 year "plus" version for around 109.99, and the Maxx 3 year that ranges from 139.99 to 159.99 depending on what group number.
And then theres the AGM batteries that are an entirely different animal and cost even more. They are better at handling the demands seen in vehicles with auto stop-start.
Interesting, the 51R Maxx sells for 159.99, and the bigger with more cca 24F Maxx sells for 139.99
Maybe the 51R is more expensive to make and or sell because its used in Hondas with the 2.4 liter and its somewhat undersized for that motor.
So, is the op comparing a lowest tier from years ago to a higher tier now re price?
That really would sque the comparison.
Walmart sells the exact same battery as other stores with different stickers and different warranty. But the slightly better warranty at the other stores is not worth the big jump in price.
Also, keep in mind that in general, chemical reactions occure twice as fast for each increase in temp. of 10 C ( or 18 F ) and chemical reaction rates in general decrease to half as fast for every decrease of 10 C ( or 18 F ).
People who post about the short or long time a battery lasted are not providing useful info if they don't include details, such as tier level, average and low and high temps. abuses such as fully discharged and if so how many times. Even if a battery is mounted in the engine bay or in some cooler place in the vehicle will significantly effect how long a battery last.
So, without a lot of details ( which most don't provide ) post about how long a battery last don't provide useful info.
So, the average ambient temp. plays a huge part in how long a battery last.
Some battery manufacturers may tweak the acid concentration some to match the battery to the climate. Such as slightly weaker acid concentration in batteries in hot southern states, and slightly stronger acid concentration in cold areas like N. Canada and Alaska. I know they usd to do that, but have not seen anything about it for a very long time. And that would effect a batteries life also. It also effects cca.
Also, some extreme hot areas like the hottest sections of Arizona, wear out a battery in very short time, and since even a top tier battery will only be reliable for a much shorter time, like a year of solid reliable use and dead in 2 years, sometimes in those conditions it wise to buy the lowest tier, and replace it often.
A vehicle that spends it life in a cool underground garage may have its battery last much longer than a similar vehicle and battery that sits outside all summer in hot weather in the same area.
So when people are comparing the price of an apple to the price of a bag of oranges and not including details, its really useless. And even more useless when one is kept in the fridge and the other kept over the stove.