We have an LG wall oven that had a binding arbitration sticker on it. Anyone that uses it enters into a binding arbitration agreement with LG according to the sticker.

Of course, there's no notice at time of sale, and by the time you see the sticker, you're looking at redoing brand new kitchen cabinetry if you return the stove.

I suspect it is not a legal contract (post sale, well after returns become infeasible). If it is somehow binding, when companies pull crap like that, I think the "I reject" path should involve them reimbursing you for your time and any sunk cost you incurred before being informed of the contract.