most retail stores will pricematch with other retail stores, so in this regard i think that microstation will.
i highly doubt that they will match any newegg or other online retailer prices as such places can offer lower prices due to not having much overhead.
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personally i buy most of my parts from newegg because of the huge selection, great service and sometimes free shipping.
the only things i bought from microcenter were some ssds, flash memory, and a few odds and ends. their prices are decent in general, i just prefer the larger selection that can be had online.