if you have a local micro center the 3770 is 259.00http://www.microcenter.com/single_product_results.phtml?product_id=0388576
for the money right now the i5-3570 is the better deal. there both 4 core cpu.
there not much a i5-3570 cant handle that the i7 sb or ib can do.
the ib cant clock as well as the sb...they run a lot hotter trying to get to 4g speeds.
the sb are only a little slower then ib,
myself if i was not going to overclock i use a 212 heat sink and the i5-3570k use the money for a better mb/power supply or ssd.