I have 3 vintage toy sewing machines. Two of them are Singer's Model 20. I paid about $75 apiece for them. One of my TSM's is a Damascus that I paid $45 for.
Those people are asking double - at least - for what those machines are worth! If you want a TSM, just keep your eyes open and one will come along!
Here is a link to our TSM photo shop! Vintage children's sewing machines Enjoy!