这个电脑值多少钱的英语表达有以下几种：

What's the price of the computer？

How much is this computer？

How much does this computer cost？

What does this computer cost？

How much is it？

建议根据具体的语境选择合适的表达方式。例如，在询问价格时，通常可以使用“How much is this computer？”或“How much does this computer cost？”