How about make the lesser awards Milestone awards. 600, 650, 700, 750, 775, 200, 250, and 275. Awarded once per career. Make them a bit better than a magnet that won't stick to a magnet, or a keychain the breaks in the wind.
Make the 298-299 a once a career kinda ring. Make them decent.
Make the 300-800 nice rings for the first one, free. then offer future rings either a less quality, or for a small fee.