According to the current information, the spontaneous combustion of yogurt machine is not common, regardless of the price. The yogurt machine uses low-temperature heating in the production process, which generally does not produce high temperature or cause spontaneous combustion. However, product quality and usage are the key factors affecting safety.

To ensure safety, it is recommended to buy a yogurt machine with certification mark and use it correctly according to the instructions. In addition, the integrity of the power plug and power cord should be checked before use to ensure that there is no damage, so as to prevent short circuit from causing fire.

If you have any questions about the specific model or brand of yogurt machine, it is recommended to conduct detailed market research and product comparison to choose reliable products. In addition, you can also refer to relevant consumer reviews and professional evaluations to understand the experience and evaluation of other users.

In a word, in general, price is not the main factor leading to spontaneous combustion of yogurt machine. Choose regular channels to buy and use it correctly according to the instructions. Generally, yogurt machines will not spontaneously ignite.