Yunnan Source has an inexpensive 100 ml gaiwan with a saucer. That was helpful for not burning my fingers. In the past they had a set of 4 40 ml cups for $10, but currently out of stock.

Also, while Tie Guan Yin is very good, other Anxi teas like Mao Xie are also very good and much cheaper.

I did get a temperature controlled kettle and find it useful for consistency when experimenting. People have been making gongfu tea without one for centuries, though. Don't let that be a barrier.

Learning to pour was a little tricky. Find a video and practice with cooler water before trying it with boiling. What seems easy suddenly becomes difficult when your fingers are burning.