They are considered "tea size", but were also sold in the Mother Daughter toy sets. Wagner also repurposed the pattern to make the Wagner's 1891 Original toy set. I think the book says $50, but I have several and have paid ~ $12 to at most $25. Some eBay sellers seem to think they're worth quite a bit more. The fakes are rampant on this one, though.
Edit: I was a bit surprised to come home and flip open my BB to see a valuation of $75-125. I think that's unrealistic, in spite of what some pieces are selling for on eBay these days. IMO, anything over ~ $30 for a 262 or a 273 is excessive.