Printer ink...if you don't mind using "no name" refills, they are dirt cheap at http://www.inktechnologies.com
I have been using them for the past few years and they work as well as the brand name ink cartridges. I pay $5.50 for a no name where the brand name costs $19.95. And, if you order $50 worth or more, shipping is free. For me, I use a lot of ink, and this is a no brainer.
Gooseberries. I never had jelly made from them, but ate them fresh at my Grandmother's farm when I was a kid.