If you are on a very tight budget, what I used to do was to drop a punch down the case mouth, set the case on the primer and tap it home. Now and then you'd get an unpleasant bang, but not that often once you learn the feel of it. The unpleasant bang teaches you the feel in short order.
Considering the cost of a Lee hand primer I don't know why you'd bother, but it can be done. Unless you are loading with a hand tool, you need a shell holder for your press anyway, and you can prime with your press.