If price is the big objective, then you may want to home center the purchase.
I don't think online shopping for toilets is a good idea. You can expect about 20% breakage, meaning four out of five seem to make it.
My experience purchasing locally from the suppliers here is less then 1/2 of one percent with issues.
I tend to recommend product that you can both get parts for, and work well consistently. They're not in your price range.
But for me, time is more important. Service calls done for free to tinker with a flaky product doesn't make sense.
It's hard to recommend some of the "Box" products, mainly because they bring in containers of them, and you may not see the same product next year.