I love burning wax tarts and have several tart burners. Wax tarts are different than candles because they are wickless, but you do need to melt the wax from underneath with a smaller candle, or a tea light. Because I go through so many tarts, which can be expensive, I am always looking for inexpensive tea light candles. Mainstay (a Walmart brand) unscented tea lights seemed to fit the bill.
Unfortunately, I do not like Mainstay tea lights. The flame they produce is too small and sometimes does not even melt all of the wax in the tart burner reservoir above. I did not notice before I bought them, but they are much smaller than other brands of tea lights, so they do not burn as long.
On the positive side, they are inexpensive; but I would rather pay a bit more to have a more effective light. They are also unscented so their scent does not conflict with the fragrance I’m burning.They are also easy to light.
I would not recommend Mainstay tea light candles. Spend a few more dollars for higher quality tea light candles. Unfortunately they come in bags of 50, so they will take a while to go through.