How to buy past coupons

I use two clipping services which I have come to love.  At first the thought of buying coupons seemed crazy.  However, I have never spent over $8 on buying coupons on one transaction and I average saving over $50 with each purchase so to me it is well worth it.  My favorites are thecouponclippers.com and manufacturescoupons.net.  The couponclippers.com are more expensive but the variety is usually a little better.  Manufacturescoupons.net has been closed for a bit but should be back up and running this week.  If you need the coupons for this week, order them by Tuesday at the latest.  I would try to order Sunday or Monday to guarantee they arrive before the sales are off.  Also, do not fret if your biggest deals are no longer available ask for a rain check.  These are the best because then you have more time to find coupons.  Good luck and happy saving.  Remember just because it is on sale does not mean it is the best deal.  Keep your fliers for several weeks to compare the best deals and you will know when to stock up.