Det är möjligt att dom ändrat detta
Sökte runt på Immigration office i Thailand men där finns ingenting under "fee" om vad overstay kostar
Hittade dock detta om Visa för utlänningar
Requirements for foreigners applying for a visa (gäller dock ej turistvisa för européer etc som får stanna i 30 dagar utan visa):
* Nationals of countries specified by the Ministry and approved by the cabinet. The nationality must be the same as the country issuing the passport
* Entering Thailand as tourists for 15 days
* 1 passport picture 4x6 cm, not more than 6 months old
* No blacklisted person (persona non grata) according to the immigration laws
* Confirmed onward or return ticket within 15 days
* Indication of actual address of residence in Thailand
* Cash of at least 10,000.- Baht (US$ 250.-) per person or 20,000.- Baht (US$ 500.- per family)
* Valid passport with validity of at least 6 months
Application for visa on arrival
* Arriving passengers wishing to apply for a visa on arrival must fill in the application form (TM. 88) which is available at the Visa on arrival counter in terminals 1 and 2 at Bangkok International Airport.
* The form TM. 88 (formerly TR 15) together with the application fee of 1,000.- Baht must be handed in at the Visa on arrival counter. The fee is payable in Thai Baht only. Currency exchange service is available at the bank counters near the Visa on arrival counters.