No, except that it's like a circus when the new guy doesn't know how to make the deal.
I've bought a Everstart Walmart for 10 years, since I have an RX8 that eats batteries from the heat, and Wally is next door.
I've gotten at least one free where the warranty is free in 36 months, and I just had one go out at 37 months, and paid about 2/3 the new price.
It's my best cheapest way to keep a battery, and I'm careful to keep charged and disconnect when I don't use for 3 months. I left battery on and car locked for 2 months once, and it started.
I'm in a wheelchair, but can stand up, and I don't let them touch car; I take it out to them.