This site is more along the lines of how-to.
You may want to try phoning SelectBlinds Or Blinds.com.

Usually, cellular shades and pleated shades come without valances.
They are sleek and stack to almost no height at all (when pulled all the way up).

What you may want to consider is to purchase inexpensive valance rods
and use sleeve-type cloth valances.

Alternately, depending if your windows are deep enough, a vertical blind
valance may fit inside the window frame before the other shades mount in.

Hope this helps you a bit in terms of finding a direction for your needs.

P & K