Knowing the industry there's a bunch of people out there on the payroll continuously knocking out these assets all day long every day.
Google routinely uses agencies for this kind of work (I have been on both sides). A marketing website like this would be a ~$100,000 spend (depends how many pages and how many creative assets).
That sounds a bit high, but I'll trust your expertise.
Regardless, 1/50 the value of the prize doesn't seem egregious to me.