I know Amazon had the x360 version for 19.99. But as far as I believe, their Wii and PS3 versions are normal price.
Best Buy offers Harry Potter: Years 5-7 on all platforms for 19.99 with free shipping. Lowest I've seen for this game so far.
XBOX 360: http://www.bestbuy.com/site/LEGO+Harry+Potter%3A+Years+5-7+-+Xbox+360/3055161.p?id=1218374935217&skuId=3055161&st=VG_Lego_Games_Sale_20120408&lp=6&cp=1
PS3: http://www.bestbuy.com/site/LEGO+Ha...5356&st=VG_Lego_Games_Sale_20120408&lp=7&cp=1
Wii: http://www.bestbuy.com/site/LEGO+Ha...5407&st=VG_Lego_Games_Sale_20120408&lp=5&cp=1
Cheers
Best Buy offers Harry Potter: Years 5-7 on all platforms for 19.99 with free shipping. Lowest I've seen for this game so far.
XBOX 360: http://www.bestbuy.com/site/LEGO+Harry+Potter%3A+Years+5-7+-+Xbox+360/3055161.p?id=1218374935217&skuId=3055161&st=VG_Lego_Games_Sale_20120408&lp=6&cp=1
PS3: http://www.bestbuy.com/site/LEGO+Ha...5356&st=VG_Lego_Games_Sale_20120408&lp=7&cp=1
Wii: http://www.bestbuy.com/site/LEGO+Ha...5407&st=VG_Lego_Games_Sale_20120408&lp=5&cp=1
Cheers