CMARKN  Everyone has already said all the good stuff that needs to be said about the program. I concur, it is fast, flexible and reliable.

But so too is the developer. I emailed him about a problem importing a file of card data with UTF-8 characters. He responded within 15 minutes, and had it fixed within 36 hours of my report. That's the kind of developer I want to support.  
(Version 2.8)

CMARKN  Yes, in fact it has two print options. One for printing both sides of the card in a strip so you fold it over to form your two-sided card, and one that cleverly arranges for printing on both sides without a duplex printer. It was this two-sided printing that sold me on it. The best use of flash cards is when you have them with you all the time and instantly available. Only printed cards give you this.  
(Version 2.8)

CMARKN  If you are going to use a $20 mouse, then you aren't going to expect it to do much and you don't need this program. If you use a multi-button mouse, especially one from Logitech, you are going to want all the buttons to work, and since the Logitech LCC driver is so unusable (don't bother even trying to set button functions for anything other than the default), then you need this driver. Now I get to pick whether the scroll wheel clicks or not, not the machine.

After the frustration of the included software, I'd consider this program cheap at twice the price.  
(Version 3.6)