DFO Basics?

You can upgrade stuff through Kiri. Each reinforcement costs ryan cokes and money, it's just like scrolls. I haven't done it too much so not really sure how it works, but once you get past +10, item can boom.

Upgrading information.

[COLOR="Teal"]There are also colors for equip names:
white is crap npc it.
blue is uncommon disassemble it.
Purple is rare. Use or sell to people.
Pink is really rare.

There's also legacy equips, which are worth a lot.[/COLOR]

To add to this, sealed items will become untradeable once you equip them.