As mentioned in my post, it's possible to price match with a Best Buy that is in your area. It's free to try
...on other forums, there's been great success. Btw, BB will price match with these online retailers: Amazon.com, Apple.com, Bhphotovideo.com, Buy.com, Crutchfield.com, Dell.com, Frys.com, hhgregg.com, HP.com, HomeDepot.com, Lowes.com, Newegg.com, OfficeDepot.com, OfficeMax.com, Sears.com, Staples.com, Target.com, TigerDirect.com and Walmart.com.
I picked up this deal on Saturday. It's pretty awesome. They take $70 off the CPU, $40 off the motherboard and $20 off the RAM when it's all bundled with a haswell. And there are plenty of great motherboards and RAM to choose from.
I compared it to newegg and amazon and at microcenter it was a total of $90 less for the 3 parts.
I wouldnt worry. These prices are for always, they only get better. And microcenter always has plenty of stock on this stuff.
If you are really worried, go ahead and place an order online for store pickup and they will pull your parts and reserve them for you. You can even choose to pay in the store only after you pick up your stuff. If you never show to pick it up nothing happens, they just revmoe your order after a few days.