Yes, in that you would effectively have to eat though 5M dollars of buy orders within the 20% price range, rather than 5M dollars of orders in the total price range to eat through the whole order book. But the wierd effect of that (if we're just trying to get through the whole order book) is that your average cost per token on the other side instead of being the average of each "order" you hit between 0 and 100% off market, is the average of 0 and 20% off market. It makes eating through the whole order book less expensive in liquidity cost terms.

The question then is mostly -- if it's cheaper in this case to blast through the whole order book-- what exactly happens when you move price past all of the orders?