How handy are you or is there someone at the home that is also capable. To be honest, installing and measuring blinds seems like a daunting task but it is only difficult on the first couple and it is quite easy after that. If you source the materials yourself, they will be less expensive, but with nearly 30 windows, you are still looking at a significant expense if you go with a nice unit.

Without knowing the size of your windows and the product that was quoted, a price of $10,000 for 28 windows is quite normal if you are having a professional measure and install them. It comes out to approximately $360 per window.

Your least expensive options would be mini blinds, faux wood blinds, and roller/screen shades. Depending on the window size, these products usually start around $200 per window if you are ordering custom. When you start looking into fabric shades such as cellular or Roman shades, you can be anywhere from $300-$500 per window to upwards of a $1000 depending on size of window, fabric, operating system, etc.

If you are looking to cover that amount of windows for less, you will need to look into purchasing from a home improvement store or ordering online.