I want to buy a android 2.2 tablet for my brother as a present,the link as follow:http://www.gowetrade.com/8-inch-a8-pad-cortexa8-google-android-22-tablet-pc-with-4gb-wifi-black-color-p-3176.html,Is this android 2.2 tablet expensive?i got a coupon from this site, it has 4% discount.