At only $45 after rebate for the PSU listed above, that is cheap, and especially for one that listed for $85 or almost twice as much. A decent quality PSU on sale for a very low price translates into a great value.
That being said - if you are sure you will never want a strong graphics card requiring more than a 400w PSU, then you can save $10 and get this excellent PSU:
CORSAIR CMPSU-400CX 400W ATX12V V2.2 80 PLUS Certified Compatible with Core i7 Power Supply - Retail - $35 AR with free shipping
Voted Best Power Supply Manufacturer by Custom PC 2008(limit 5 per customer) http://www.newegg.com/Product/Product.aspx?Item=N82E16817139008