Well, the page wouldn't load properly from the link, but clicking around on EA's site, I was able to get it to come up. Most of the games are at least $15 more than I would pay, but I decided to go ahead and get The Sims Superstar for $19.99 - $15 coupon, to expand my Sims library. When I add it my cart, the price goes up to $24.99!!!!! I did some more poking and prodding, and these changes happen when one adds the items to one's cart...
The Lord of the Rings™; The Return of the King™ -- $19.95 becomes $14.99
Harry Potter™: Quidditch™ World Cup -- 12.95 becomes $7.99
The Sims™ Makin' Magic -- $29.95 becomes $24.99
Command & Conquer™ Generals Zero Hour -- $19.95 becomes $14.99
SimCity™ 4 Rush Hour -- $19.95 becomes $4.99
Medal of Honor Allied Assault™ Breakthrough -- $19.95 becomes $14.99
Battlefield 1942™: Secret Weapons of WWII -- 19.95 becomes $14.99
James Bond 007: Nightfire -- $12.95 becomes $7.99
Harry Potter and the Chamber of Secrets -- $12.95 becomes $7.99
So, as is to be expected, the one I want is the only one that goes up in price, all the others go down. Oddness.