Grammar lesson.

Correct use of "only":
Quote Originally Posted by netrix
I was spending that kind of money of rides to and from the airport for years before I learned how easy and cheap
it is to ride a comfortable air-conditioned bus. Only about $4 USD / р╕┐134 THB http://www.airportpattayabus.com
Incorrect use of "only":
Quote Originally Posted by recently on another forum
I'm using an airport transfer (edit: Suwannaphum to Silom) provided by the hotel and only have to pay it for 3000 baht.
(sorry, couldn't resist)