Ponyo will be released on Tuesday, March 2nd. Disney has a coupon for $10 off the Blu-ray / DVD combo pack coupon here. Target will have the Blu-ray / DVD for $24.99. Combine with the coupon to get the movie for just $15.99! (We might see cheaper prices)
Remember that Disney Blu-ray / DVD combo packs come with both a Blu-ray and a DVD version of the movie.