Price per sq foot variability

[Bert Rich]

When researching a zip in tampa, i've found a very large discrepancy between the price paid per square foot in very similar turnkey 3/1 (or more) houses) with very similar total sq feet sold over the last 6 months.  At first look, this appears to present major opportunity.  I'm also factoring in the consideration that Tampa had much upside over the last 5 years in comparison to most markets, so the market correction in this zip could be greater than ,,, example Maine...   Nonetheless, the range is still very very large...  Please provide insite as to factors i'm not considering.