The Udderly EZ Hand Milker is inexpensive and was a lifesaver for me, milking my cow with painfully arthritic hands. Because it does not have a pulsator, I got a lot of grief from the Family Milk Cow group who were totally opposed to it, but I then contacted a dairy veterinary scientist at UW Madison who reassured me it would not hurt my cow's udder. It is not nearly as fast as a bucket milker, but it is quiet and relaxing to use. My cow never minded it at all. I was milking up to 4 gallons a day-- a goat would be much faster. I have heard that Udderly EZ now makes a powered version, that can even be solar powered, but I don't know anything about it.
https://udderlyez.com/cow_milkers.php 
Here is my blog post about first using the Udderly EZ milker, with some photos:
https://squashblossomfarm.blogspot.com/2010/06/udder-relief.html
Although it gave my hands considerable relief, it does require a bit of hand use and I still battle hand pain (mostly from weeding and other farm work) so I ultimately purchased a used bucket milker.
