我试试哈~~

首先price difference是中翻英，我觉得英语应该是 different prices，或 difference in prices。你可以换一个问法：Are they at same price? 或 Are the prices different？

 

Does the "supreme" one worth the price difference?

这句简直太中文翻译英文了，我会说 Is supreme a better/good deal?
 

不一定正确，仅供参考：）