I buy green coffee beans and roast them myself in a converted hot air popcorn popper. You can find green coffee in any variety that you might prefer, I'm partial to Costa Rican and Sumatran beans myself, they are usually priced around $6 a lb for green beans.
I can roast a pound of coffee in about 30 minutes. The difference in home roasting and buying off the shelf is phenomenal.
You can control the roast, and consequently, the taste.
The only down side is , after a week or so, it becomes very difficult to find a good cup of coffee anywhere but at home.
The roasting process is pretty simple, you can find a Popcorn popper to convert to use pretty cheap, I usually find them at garage sales or thrift stores. If anyone is interested,
www.sweetmarias.com has lots of info about home roasting, and is a great source of beans as well.
As for an espresso machine, I have a vintage lever machine, a Pavoni, I purchased it at an estate sale, which is part of what started the home roasting madness in the first place.