Wow! That's expensive. I pay $5.79 for 1 lb Organic Valley Organic Unsalted Butter and
it's a top quality butter with an 84% butter fat. Most U.S. butters contain 80% - don't know what the Costco percentage is. I use Organic Valley most of the time, but I've also used Land 'O Lakes 80 % a few times ($4.19 a lb), and have had good results.
BUTTER BRANDS - FAT PERCENTAGES
By law, US butter must contain at least 80 percent butterfat.
BRAND - BUTTERFAT
Breakstone's Butter - 80%
Cabot Butter - 80%
Horizon Organic Butter - 80%
Kate's Homemade Butter - 80%
Keller's (known as Hotel Bar in New York) - 80%
Kerrygold Irish Butter - 80%
Land O Lakes Butter - 80%.
Keller's Plugra - 82%
Keller's European Style Butter - 82%
Lurpak Danish Butter - 82%
Land O Lakes Ultra Creamy Butter - 83%
Beurre d'Echire (France) - 84%
Organic Valley Butter - 84%
Egg Farm Dairy Butter - 84-86%
Straus Family Creamery Butter - 85-86%
Vermont Cultured Butter - 86%
Animal Farm Butter (VT) - 87%