To give an approximation of how much gold is worth:

In Palagria, a full set of high-quality chainmail costs around 400 silver coins.

In [i]most[/i] nations, people of common birth  or low social standing rarely ever have possession of a single gold coin during their entire life, unless they're very frugal and thrifty.

Roughly speaking, you need about a 150~200 gold coins to purchase a decently sized estate, with a mansion, stables, servants quarter [i]and[/i] hire on staff for it.

Basically, the guy who gets the reward is pretty well set for a long time. :P