Not exactly what you’re seeking, but I use a Lodge reversible grill / griddle in the oven. Works well. I believe we ordered ours online, but I’ve seen it in Crate & Barrel. Minus point: can’t really make one big pizza, unless it’s an unusually oblong shape. But it works great for holding heat.
And as I said above, Crate & Barrel does stock pizza stones - I’ve never noticed a pizza steel there. The problem is going to be making sure it fits in your oven.
I’m guessing what @chydals linked to above isn’t quite what you’re looking for - I guess that’s for more deep-dish / Chicago style pizzas? Preheating a pan like that, and then sliding a pizza into it, would be tricky indeed.