Effectively: no. Cheaply: no. The London Olympics had a final budget of roughly $13 billion, or nearly double the original forecast of approximately $6.5 billion. For comparison, Beijing cost $40 billion, Athens cost $11 billion, and Rio cost $13.1 billion. Note that these are just the budgets for the games themselves, not including ancillary spending on other non-game infrastructure.

For comparison, the combined total of LA's three Olympics (adjusted for inflation and including the forthcoming games) is well below $10 billion.

I see, I must have remembered the forecast budget, thanks.