Only a few years after they were first used in Thailand, collecting them is a major hobby. there is a collectors' group which organizes exhibitions and stalls selling them at the Ma BoonKrong Shopping centre and Chatuchak weekend Market. Cards vary in price according to how many were made of a particular design. the most experimental TOT card of which only 100 were made in 1990. the price has already reached 80,000 baht and will continue to rise so long as there is an increasing number of collectors, so buying such rare cards may be a better investment than the Stock Exchange.