Dollar Tree has announced it has reached an $8.5 billion deal to purchase Family Dollar. The move comes as experts say, its discount stores are struggling in tough economic times. Core customers for bargain stores and major retailers are among the hardest hit by the recession. The move, means, Dollar Tree could have than 13,000 thousand stores in North America. No word on how that's going to impact local stories. The still needs to be approved by Family Dollar shareholders.