The same exact kit is only $100 at Newegg: http://www.newegg.com/Product/Product.aspx?Item=N82E16820145224
There are plenty of less expensive kits available from Newegg, all of comparable performance and quality. Many of the $70-75 kits also offer $20 rebates.
Here's a link to all of Newegg's 6GB (3x2GB) DDR3-1600 kits sorted by least expensive to most expensive: http://www.newegg.com/Product/ProductList.aspx?Submit=ENE&N=100007611+600006076+600006127&QksAutoSuggestion=&ShowDeactivatedMark=False&Configurator=&IsNodeId=1&Subcategory=147&description=&Ntk=&CFG=&SpeTabStoreType=&AdvancedSearch=1&srchInDesc=
Also, keep in mind that most memory manufacturer's offer lifetime warranties on their DIMMs. You may want to contact the manufacturer of your current memory and request an RMA replacement.