A decent bike for a child costs more than that these days in North America.
You either bought this bike used, stolen, in 1989 or are trolling.
You say used like it's a slur. There are many fairly high quality bikes to be had used for a reasonable price in most areas of the us. With a few tools and a can-do attitude, you can make almost any bike fit for use. My current daily bike cost about $50. I replaced maybe $100 of bearings and other wear parts. Going on year 4 of medium use now; still works great.
Obviously not everyone wants a new hobby of fixing bikes. But its a great time for almost any hacker or maker.
A good Kids bike is easily 300-400. If you want one that weighs less than your kid that’s what you have to pay.
I bought it used. Why does that discount my statement?
This thread is bonkers. I'm not even American and it took me all of two minutes to find a bike for $118 USD (or about 90 GBP) available from Walmart. Here it is: https://www.walmart.com/ip/1121295
It looks like a perfectly serviceable bike, if not the most amazing experience. I bet you with proper maintenance it could last you decades and thousands of miles.
People in this thread who are claiming a new bike is nearly $1000 are on another planet.
I get that this isn't a wheelchair, doesn't have anything to do with wheelchair prices, and I would certainly not want to rely on this thing in the way a wheelchair user must rely on their chair, but c'mon, guys, stop with the wild hyperbole about bike prices.
Even a cheap Walmart kids bike costs more than that now. (Even the toddler bikes are reaching up there in price.)