MegaMacs offers the Soulo Karaoke App and Wireless Microphone for Apple iPhone, iPod touch, and iPad, model no. AM71, for $52.99 plus around $7 for shipping. That's $3 under our mention from four weeks ago and the lowest total price we could find by $40. It features pitch enhancement, reverb, and echo. You can choose 10 Soulo song files to get your karaoke collection started, then continue adding to it from the many more available for download via in-app purchases for 99 cents each. Deal ends May 9.