I just priced adding a motor, battery pack or solar panel, to Bali blinds. It was $150-160, less if they are on sale which happens all to time at Lowes & Home Depot in the range of 15-20% off.
So assuming 20% off, that means adding motorization is about $130.. that comes with a 10 year warranty, totally hidden in the valance, and backed by a huge company.
I'll be replacing my shades for about $300 per. Then I simply add a bridge for about $100 to interface ALL of my shades and i'm good to go.
So I stand by my comments earlier...
At $30-60 per shade, 3rd party control would be spot on for almost anyone.
At $100-120 per shade, it is not cost effective, and most people wont, unless you have some seriously expensive shades already.
I'm hoping the iBlinds device goes for sale.