Thats how Arsenal raised money to raise money for the New North Bank developpment back at the start of the 1990s, sold bonds, priced at £1000 and £1500 - Season Ticket on top of this. As the quality of football increased through the 1990s, they rocketed in value, reaching 6-7k IIRC. Of course, the a*** fell out of the market when the new stadium was launched!