Silver Wire first reliably becomes available to us when we access the Dragon's Clutch Place of Legend at Level 17. I say "reliably," because it's possible that we might get it from Glurb prior to that point, but there are no guarantees.
Maximum sale price in sea trading:
1,430 royal coin
Myra's purchase price:
As far as I've seen, Myra doesn't purchase these directly; only once they've been incorporated into another recipe.
Market where Myra purchases them:
How many fit per slot on sea trading ship:
First available at level:
15 (from Glurb), 17 from a Place of Legend
Where to adventure to collect:
(Click on a place name to see the odds for each character to collect this item there)
Recipes using this item: