NEW YORK ( TheStreet) -- TheStreet's Debra Borchardt and Chris Ciaccia are discussing the recent disagreement among analysts regarding Apple's ( AAPL) stock price and ability to maintain strong sales numbers.Peter Misek, an analyst at Jefferies, has again lowered his price target on Apple to $405, from $425 as the tech giant continues to drift lower. As recently as December of 2012, Misek had a $900 price target on the stock. But this is familiar territory according to Ciaccia, where analysts have experienced extreme difficulty while trying to predict Apple's sales targets and earnings power in recent quarters. While most have been jumping on the bearish bandwagon, Ciaccia argues that Apple is going to have a huge product refresh this September, with a new iPhone and possibly new iPad ahead of the holiday season. "This is what makes a market," he said, regarding Misek's pessimistic iPhone sales estimates against BMO's positive estimates. But when it comes down to it, it's up to the investors to do their own homework. They can't just follow analysts' judgments, even though they do a lot of work to get their estimates, Ciaccia said.