Pricing new gear in Star Frontiers (very much need help)

I need some help with pricing new stuff in terms of credits.  I need to know how much a credit is worth in Real Life currency.  I thought about simply taking a similar item with a known price (such as a weapon or a vehicle) and comapring the price in credits vs the average price in real money (in this case US dollars) and deriving a value, but since so many other areas of the game are rather arbitrary and inconsistent I didn't know how reliable such a derivation might be.<br /><br />Should I just go &quot;by type&quot; and say &quot;this item is most like [x], so I cost it at around that same price&quot; ?  That would be simpler, but would it be accurate?