Saving on Coffee

I drink instant coffee and find that the name brands are quite expensive. So what I have started doing is buying the cheaper no name coffee (about 1/2 the price) and mix it with the more expensive coffee. That way, I still have the flavor of the more expensive brand and the cheaper brand acts like a filler. I haven't noticed a huge difference in taste and my husband hasn't noticed the difference either (he doesn't know that I have done this).