Target, Walmart and Best Buy price match. TRU and GameStop do not. The Walmart must be less than 20 miles away from the store they're price matching, however.
Also, they will not price match percentages (ie, 50% off) because the other store might have a higher retail price. Luckily, in this case, the ad also states the actual price beside the percentage.
Price-matching the playsets at Target, Best Buy or Walmart should not be a problem at all. You must have an actual copy of the ad with you though. Most retailers need a copy of the ad to include with their records of the price match.