Here's the rule: If you're comparing things using words like "more" or "less," you use "than." So, "I make
more money
than Josh" or "Your XBox gamerscore is
less than mine." But when you say "as much" or "as little" or, in this case "as expensive" you need to use "as" again. "I make
as much money
as Josh." Or, "the latter are not nearly
as expensive
as brand-name drugs."
