To make the tea, it is easy as long as you have access to the ingredients through a local Asian market or online. At my Asian market, there were more than ten options of pearls available for under $5USD.
You can additionally buy the loose-leaf Thai tea at the Asian Market. There are iced tea packets that already contain sweeteners and cream, or, you can buy the tea to brew and sweeten on your own. I prefer to do this and brew my own.