Tablet manufacturers that want to compete with Apple's (NASDAQ:AAPL) iPad need to price their tablets at far less than the $499 iPad 2 price point if they want to generate significant sales. According to a new survey from research firm iGR, the vast majority of respondents are only interested in the iPad and it would take a discount of at least $100 to convince them to buy another OEM's tablet. iGR also said that almost all competing tablets launched so far have similar specs to the iPad but cost more than the tablet. Release