I've been looking into these, but was turned away because of the price. However, at this price, I picked up multiple for great stocking stuffers! Shipping is a flat rate of $5.
Polycarbonate 2 pack - $8
Aluminum Classic w/ expansion - $10
Aluminum with tracking tile - $34
Add $5 for shipping, but may order multiple at same shipping price.
Link to deal:
Link to Amazon to read reviews:
Good reviews on the Aluminum classic at 4/5 stars at 2448 reviews.