PDMS galinstan sillicon device


I am going to make some PDMS/galinstan experiments by following this PDF.

but I dont have enough knowledge to get me the right galinstan on Alibaba, the price is varying a lot, i guess it relates to the melting point? (this one is 6-10 ℃) like is this one okay?

And anyone knows this Swiss knife or how do i find a cheaper option?

many thanks