Newegg has fractal design s with and without windows on sale with free shipping(which can run you $25+ normally) This is a very highly rated case by many other computer hardware forms.

In the past 3 months, this is near the lowest price of $72ish, but I am unsure if that is with free shipping.

http://www.newegg.com/Product/Pro...-_-Product

they also have the

windowless one for $69.99

http://www.newegg.com/Product/Pro...-_-Product

The S w/ window is 16% off neweggs regular price but the shipping is what makes this a deal. I have been looking for this case with free shipping for a few months fyi. The price drops around this range but the shipping is usually $20+