I found one source, but don't know about cost...

Here is a link that might be useful: roman shades

I want something similar and may just purchase a really inexpensive white roman shade and affix the ribbon myself.

the shade store. you can do it online if you're not near a storefront.

here's dd's room w/romans from the shade store (they did all our window treatments).

Another spot to check is www.CountryCurtains.com = they have some reasonable options that may work.

I've been looking for months, unsuccessfully.

Regina, hopefully the Shade Store or Etsy link will work for you, since they both have them!

No, that doesn't help. They don't "have them"....they will simply custom make them. There are limitless options with having something custom made. But I'm done with that.....I have gotten burned too many times. It's never exactly how I thought it would be and then you can't return it the same way you can with stores that actually carry something. PB carried these shades for years. Such a bummer that they don't anymore.

Even though the ones at the shade store are not like the ones linked in the OP, I decided to try putting one in my cart. It costs $550 for ONE...yes ONE shade, plain white with yellow trim. This is for a standard 36" window in my home. Plus shipping. YIKES! That's not realistic. They don't have any colors that will work with my space anyhow but wow.