How can this be?

Same tea, different vendor. Img 1,3 are vendor 1, 2 and 4 are vendor 2.

The price difference is very curious to me. Also I spotted some differences in the back of the wrappers. For example vendor ones tea reads GB,T22111 while number two reads GB/T22111

Is there something fishy going on or is the tea massively overpriced with vendor 2? Is this even the same tea haha?