Median calculation across two columns

Apologies if this is a simple query, I have struggled to find an obvious solution on the wider web, though.

I am trying to calculate the median sale price across a total number of sales. Total 2046 sales at 17 different prices.

The data is in two columns. The first column contains the unit price. The second column contains the number of sales of that unit at that price.

Data in the attachement.

Any assistance appreciated.