These are called investors' visas, and already exist, though the prices are much steeper: $1 million investment in a new business for an American EB-5; 2 million pounds for the British equivalent. Payment doesn't go directly to the government; instead, it's supposed to be invested in a new business that creates at least ten jobs. But there are middlemen who offer the service of actually setting up and managing the business: http://fortune.com/2014/07/24/immigration-eb-5-visa-for-sale...