Keenon have been around since 2010 and already sell a range of robots ranging in price from $12 - 48K. Buying them means they cost a fraction of employing a minimum wage worker in western countries.
They are embodied AI, so improving at the rate AI is. That is exponentially. Meaning iterations of these may be 32, 64, 128, etc times more powerful in the 2030s, and even cheaper.
Like all other tech they will follow an s-curve. Meaning one day they will be new and we'll see few of them, and then very rapidly, they will be widespread and everywhere.
How soon will they be 2, 4, and then 8 times better? Probably before the 2030s. They might still seem slow and janky now, but not when they are 8 times better.