A piece of all thread rod, a couple nuts, and some large washers from the hardware store and you can build your own headset press for less than the cost of having the bike shop install one.
What size nuts are those? (That's what she said).
Washer size? I guess it depends if the heaset is 1" or 1 1/8"
Seriously, that looks incredibly simple and I'd like to write down those exact parts and go to Lowe's tomorrow.