Search engines are good for finding shops, but not individual items. There also aren't many shops that are dedicated to only tall, usually big and tall instead.
I don't know how good AI is at these kinds of tasks, but I can tell you that it's not easy manually, especially in some parts of the world where you might have to factor in shipping/return costs.
I don't know how good AI is at these kinds of tasks, but I can tell you that it's not easy manually, especially in some parts of the world where you might have to factor in shipping/return costs.