How much does a realistic robot cost?

I'm curious to know, how much would one have to invest to acquire a realistic robot? Are these kinds of robots generally affordable for the average consumer, or do they fall into a more luxurious category? And what factors contribute to the varying costs of these robots - is it the level of realism, the functionality, or something else entirely? Understanding the cost range would definitely help me make a more informed decision about whether or not to pursue this type of purchase.