American Apparel is still offering up to 90% off select items in its sale section. You might need to select your region to see the sale pages.
Plus, coupon code KIIP10F3ZUL457 takes $10 off orders of $10 or more with stacking the coupon on top of the sale prices allowed. I couldn't find an expiration date for the code.
Shipping starts at $5, but orders over $50 qualify for free shipping. Sales tax is added where applicable.