Prices come straight from each brand's own US store and refresh daily; always check the store before you buy. Ratings are the customer reviews on each filament's own product page. Sorting by rating also weighs how many reviews there are, so a single 5-star review doesn't outrank hundreds of 4.8s. Shipping meter: full and green when this item ships free on its own; fewer bars the more you'd need to spend before the store ships free (each store's published US threshold, lower 48).