Simple way to reduce refunds

I found that I could get a good reduction in the refund rate for my product/s by adding an auto-responder email on day two or three (you would have to determine exactly when is the best time) saying something along the lines of

I think it is good to tackle potential buyer regret quite quickly after they purchase, since very often people are having simple problems that can be easily fixed, or just aren't sure where to start in applying your method, or whatever, and they could easily reach for the refund button at that point.

Yes, this COULD increase your support load a little, though not as much as you might think, it's more a kind of reassurance that the product owner is standing behind his product, and should put you up on the deal overall. And anyway, you DO support your product, don't you, and you are not one of those product owners who wants to sell as many as possible whilst providing as little support as possible?! No siree, none of that going on in IM..!

Perhaps I had better not get started on "big product launches where support dries up within a few weeks after the launch, or after the refund period has expired"... Hope that's a tip that can help someone improve profits.