Amazon has the AmazonBasics Expanding File Letter Size in $6.49 with FREE shipping for Amazon Prime or orders over $25.
Product Features:
- Organizing and storing important papers or documents
- Super-durable poly material.
- Acid free, PVC free, and archival quality.
- Holds up to 900 sheets; 13 individual pockets, each expanding to 7/8 inches and tabbed for labels
- Full-size flexible flap.