Pillows:

The 26-27 inch pillows are available in stores like Linens ‘N Things; and Bed, Bath and Beyond.
Online they have them at www.spiegel.com The 30-inch pillows can occasionally be found in stores but we do not believe most are great quality. We do offer those in both down and fabulous soft poly, on the site (in the bedroom linens section). Find them here:Touch of Europe inserts

Duvets:

Duvets are available in stores like Linens ‘N Things; and Bed, Bath and Beyond.
Online they have them at www.spiegel.com

A customer was kind enough to share that she found a source for duvets that works well. Belk-Tylers or Belk have a mattress topper (it's $30 when it's on sale) that fits most duvet covers like it was made for them. They are soft and fluffy and replicate the feel of European duvets very nicely.