L.M.
I have 2 girls - almost 4 and almost 5. We bought them new bikes recently at Walmart - in the $60 or $70 range. The 5 yo is using an 18 inch size and the little one has a 16 inch size. Last year they both had 12 inch bikes which I bought used on craigslist for $20. It is very important for them to have the right size. IMO don't spend hundreds on a bike for a young kid. Once they are older and using their bikes all the time, it may make sense. But at this age, it will only last maybe 2 seasons or so. And then they will grow out of it or want a different style etc. If you really want a pricier nicer bike, check craigslist.