Alright, here we go.

Buyback prices:

Iron sollerets: 35 GP
Magim jacket: 110 GP
Eklan round shield: 315 GP
Total: 460

In young dragonscale (ancient dragonscale can't be purchased at the bazaar) the described armor would cost 6600 GP. I know that's a lot, but those immunity enchants are not cheap. If you provided the young dragonscale yourself, you'd save 800 GP, bringing the price tag down to 5800. Assuming you're trading in your buyback items, you could deduct the 460 from either of those prices.

How else may I be of assistance?