Homebrew PCBs

Using pieces of wire, resistor legs, or header pins for hidden vias
(under surface mount parts; something I need to do often) is not
really workable.  Even for exposed vias, I find the method a pain and
the results ugly.  Is it possible to actually buy real vias and some
cheap tool to insert them?  For me, vias are the main reason on some
boards to not bother DIYing and outsourcing it.