If you've been toying around with the idea of getting Mega Man Zero Collection, but haven't taken the plunge, then there is good news for you... particularly if you live near a Kmart and were planning to buy Square Enix's Dragon Quest IX: Sentinels of the Starry Skies. According to the Atlanta Video Game Examiner, the purchase of Dragon Quest IX between now and the 17th of July will allow you to get Mega Man Zero Collection for half-price. MMZ Collection isn't the only option, however; check their listing for other available titles.
In addition to the half-off, you'll also receive a $10 gaming coupon. Not bad.
Best Buy also has a similar deal, except there you can buy any DS game, and get another for half price. They don't seem to specify, so hopefully the same arrangement as above will work. However, there would be no $10 coupon.
Of course, it's possible that these deals may be local to the Atlanta locations, so you may want to check your local sales flier or call your nearest Kmart or Best Buy locations before making any trips.