The races are Federation Klingons (the Klingon Empire is a separate, antagonistic faction in the game) and Ferengi. The right to create Klingon characters costs 240 Crytpic points - roughly £2, €2.50 or $3. Ferengi cost 80 points. The new races begin with unique racial traits but are otherwise cosmetic additions.
Is this fair game, or is Cryptic nickel-and-diming MMO subscribers? Why not ask the developer yourself - we've got a live interview with producer Craig Zinkievich tomorrow evening,
Star Trek Online launched yesterday in North America and is out over here on Friday.