2. surcharge, extra charge, additional fee or charge Customers are not willing to pay a premium. 3. bonus, reward, prize, percentage (informal), perk (Brit. informal), boon, bounty, remuneration, recompense, perquisite Shareholders did not receive a premium on the price of their shares.
The Flash is faster, which is why he's called the fastest man alive. Impulse stated that Superman can reach 99% the speed of light. Wally West (Flash) can hit the speed of light and even beyond. The Flash has the Speed Force, that's what gives him his speed.
There are to many references to list as to why the flash is faster than Superman. But the common consensus is that Superman can not move at the speed of light and the flash does. I will have to do some searching but i can get you issue nums that reference it.