From my personal experience seeing this style tricycle at auctions, in good condition even with the seat recovered (as many of them have been) I think $250 is a very good deal. Just my personal opinion based on what you wrote as to condition. I tried getting one at auction 20 years ago with original seat covering and it went up to $1200, which was way beyond what I thought it might go for. Not sure how much interest there is in these trikes at present. I have seen them go for as low as a few hundred dollars in good condition.
These tiller style trikes where you sit between the two larger rear wheels were designed mainly for girls, though they were bought for boys, too, by parents who wanted a tricycle with more stability. It wasn't considered proper for even little girls to straddle a bar on a bike or trike, so they were particularly suited for girls. As times changed views on what was proper, girls began riding regular trikes with a bar to straddle the same as boys, and the treadle style trikes gradually disappeared from the toy market. So, the ones you always see for sale are somewhere between the late 1800s to no later than the 1920s. I've never seen any old ads or catalogs showing this style still being available as late as the 1930s.
Dave
