Head over to Philosophy where they are offering FREE Shipping (no minimum) with the promo code shipfree at checkout! (valid through Monday, 11/3). You will need to enter the code in lowercase letters and the free shipping will not show up until the end of checkout.
There are tons of items priced under $15! For example, get this Let It Sparkle Trio featuring 3-in-1 shower gel in a trio of sparkling scents in white cherry, white pear and white peach for just $15