I build you one for 10 million dollars. Payment is upfront. It'll have a guaranteed prediction rate of almost 50%! So almost every second trade you execute, you will make profit!!! You just need to figure out which of the two trades is the profitable one.

But wait! I build you another model that can even predict that with an accuracy of almost 50%. Also upfront payment required.

You know what?

I'll discount you both models by 20% so you save a lot of money ordering both at once!