I will include a basic instruction sheet, but recapping a power supply is at least mildly complicated, and you should know what you're doing and have a decent soldering iron, as well as a little heat-sink compound.
US shipping and handling is $5, and international is $18, no matter what quantity you buy. All my small parts are set up for combined shipping, so just use the "add to cart" feature and then check out all at once, and it will combine shipping. If you have any questions, please ask.