You can buy 200 yard spools of Seagar fluoro for right down to 4# test for $11. That way you only need to buy the expensive stuff in 6 or 7x. I can build 3 totally fluoro leaders that sell as a package in a brand name for $12-15 for less than $1.00 by using the 200 yard spools. Stored properly they will last many years and you can build 100's leaders.