Battery pricing, like everything else, is not what we are used to. It has been mentioned here many times, that there are 3-4 manufacturers of vehicle batteries here in the US. Vendors have a battery made to their spec, with the trade name they want on it.
Although I am an AZ battery fan, the last couple purchased here, are the Walmart Everstart Maxx. When AZ wants $150 and up, and the EM can be had around $100, with the same warranty, the EM is my choice. As long as your choice is equipped with the vent, I think you will be fine. At one point (I think), AZ was price matching WM, but not any more.
I just replaced a 16 year old (not a typo) Everstart Maxx 75N batter on my c.1995 Grasshopper mower. AZ wanted $150+ for their equivalent battery. The new EM was $112 out the door, same 3 year warranty. When I showed the guys at the counter the original receipt on the little pouch stuck to the old battery, they both said WOW, and added that I should not expect the same from the new one.
Don