According to Thailand's International Federation of the Phonographic Industry (IFPI), 2PM is the top-selling foreign artist(s) for 2009.
2PM beat out popular artists such as Lady Gaga and Black Eyed Peas with the release of their Thailand Special Album back in June. Despite the turmoil with Jaebeom, 2PM's popularity in Thailand is still very strong. Speaking of turmoil, if you can recall, back in August TVXQ was also selected as the Most Popular Asian Artist 2009 on Thailand's Channel V Music Video Awards.
During happier times back in July, 2PM made a visit to Thailand and even visited with the Prime Minister.
I'm sure the presence of a Thai member in Nichkhun has helped 2PM's popularity in Thailand tremendously. Right now, the 6 members of 2PM are finding popularity in homeland Korea as well as they won the coveted artist of the year at Mnet's MAMA. Hopefully, their leader Jaebeom can join them in the near future.