from radio shack just for a bit of experimenting... however, to my horror, i discovered what an absolute pain these things are to solder... is there a specific type of solder that should be used?... i was able to solder, but it doesn't adhere well to the cell...
The problem is getting the joints hot enough, there is a lot of substrate that just wicks away the heat in a system like that. Also if you get it too hot or get too much of a thermal gradient across it then it might crack. I think this type of cell was designed to be used in a clip mounting system to allow easy low tech replacements to be made in the field, rather than as a prototyping component. You could make a frame with contact clips but that is probably more difficult than soldering it.
i was considering some sort of clip, but now i'm realizing that the five bucks for each maybe should just be a reminder to research better in the future... others are more expensive, but are usually housed and probably much easier to use...