how do i get level25 fragment?

[ginobili]

I salvaged a few renown boot and only get level 1 fragment. Should I buy some higher level renown equipment for level 25 fragment?

[Derewo]

I salvaged a few renown boot and only get level 1 fragment. Should I buy some higher level renown equipment for level 25 fragment?

I used rank 11 stuff and I was able to get Level 25 Fragments. I believe the boots are still the cheapest