looks like you got ripped off too
travelhappy.info/thailand/price-of-a-taxi-from-bangkok-airport-to-khao-san-road/

315-365 in 2008. The next day I fell for the cheap tuk tuk ride scam, I will take you to all the temples only 20 baht, oh in between I will take you to my friends suit shop, jem shop, paper shop, another suit shop. My guy was actual cool about it and explained he gets a bit of money for everyone he brings in, I get a dirt cheap tuk tuk tour of the city. I never did get to the main temple I was so fed up after a while I told him to take me back.

The next day I got helped across the road by an old man (it's intimidating alright!), who told me some of the history about Thailand explained that it was a special day and lots of the temples were shut, but there were some special kick boxing demonstrations going on. After a good half an hour of pleasant chat he then called me a Tuk-Tuk and said he would take me to all the places he had told me about. I politely declined and he called me all the names under the sun. Just as I was thinking that were actually some people in Thailand not trying to scam you.
(Little Animal Disaster isn't finishing what he started, Fri 1 Oct 2010, 9:52, 2 replies)

Hmm, I think the traffic was a bit full-on
I did all that with the taxi firm, got my bit of paper, even kept an eye on the meter - it all seemed good.
Had heard about the tuk-tuk 'tours' so we walked a lot or took the overhead train & only took a tuk-tuk at night, either going for drinks/dinner or on the way back to the hotel. 40 baht max! I heard some of them around the temples quoting 500 - and people were paying it!
You've just got to be aware that it happens. On a river taxi the ticket guy tried to charge one of us 10 times the actual fare - the scamp!
( Geoff the Clownfish You know Myra, some people might think you're cute, Fri 1 Oct 2010, 13:32, closed)

Thank God it's not just me
In Sri Lanka, she who must be obeyed and I were walking along Colombo's seafront trying to shake off the crippling jet lag. A guy approached us and, to cut a long story short, took us for the temple tuk-tuk ride and then to a bar where we somehow ended up paying his tab too.
I was annoyed at myself for falling for it, but the upside was we got a few hours' excursion around Colombo for less than 30 quid. The travel company wanted more than that.
At least in Sri Lanka, they were polite about trying to deprive you of your cash. In Egypt they're conscience-free money-grabbing scumbags trying to get you to tip them for every little thing. Best examples: the airport worker loading cases onto the security X-ray machine wanting a tip for doing it, and the policeman asking for "baksheesh" for pointing out where our horse & cart was parked for the return trip to the hotel from a temple.
( Snappyuk gets BIGGER with free sample., Fri 1 Oct 2010, 16:58, closed)