It's easy and inexpensive to add pleating hooks to basic curtain or drapery panels for a high-end custom pinch pleat look. DIY tutorial and how-to's included as well as sources for window treatments on a budget.
My (!) Pinch Pleat Curtains In My Home - Chrissy Marie Blog
Curtains & Blinds - IKEA Curtains, Curtains with blinds, Ikea
DIY Pinch Pleat Curtains - Erin Zubot Design
Linen Look Sheer Handcrafted Drapery Sheer Pinch Pleated Sheer
How to Hang Curtains So They Look Custom! - MALLORY NIKOLAUS
Make Any Curtain Look CUSTOM
DIY PROJECTS + TUTORIALS
DIY PROJECTS + TUTORIALS
DIY Pinch Pleated Cafe Curtains - Erin Zubot Design
Design On A Dime: Pinch Pleat Drapes