Because "GDFE" could refer to specialized or proprietary curriculum (such as for religious education), the sample pages are generally intended for previewing content, teaching style, and formatting before purchase rather than being a product aimed at general public review.
To get a better sense of the value, you may want to look for broader discussions on forums that focus on the specific educational organization (e.g., Catholic Heritage Curricula) that produces the "GDFE" (Growing in Faith, Growing in Education) materials. Download GDFE Sample Pages pdf
Evaluate if the reading level and tone are appropriate for the intended student. Because "GDFE" could refer to specialized or proprietary
If you can share the or grade level of the GDFE material, I can help you find more specific user feedback on that particular curriculum. If you can share the or grade level
Check if the topics covered match your educational goals.
Assess if the pages are easy to read and follow.