Here's a few example prices for boards manufactured by AP Circuits:

"Basic" is two sides copper, no mask, no silkscreen.\\
"Plus" is also two sides mask, one side silkscreen.

2.63"x3.15", "Basic", qty 2, $61.29\\
3.94"x3.15", "Basic", qty 2, $71.42\\
3.94"x3.15", "Plus", qty 2, $104.38\\
3.94"x3.15", "Plus", qty 2, $111.10 (more holes, 1 custom drill)\\
3.94"x3.15", "Plus", qty 10, $355.25 (lots of holes)\\
2.36"x1.58", "Plus", qty 10, $161.00\\
3.94"x3.15", "Plus / 2oz", qty 10, $354.09\\

Shipping is not included in these prices.  Typically, it's another $30.