Test Purchasing Vapes

Under the Freedom of Information Act, I wish to request the following information:
How many instances of test purchasing vapes were carried out, to combat underage sales of vaping products?
How many of these test purchases resulted in the sale of vapes/e-cigarette products to underage individuals?

In response to the above questions, please see the table below:

1. How many instances of test purchasing vapes were carried out, to combat underage sales of vaping products? 2. How many of these test purchases resulted in the sale of vapes to underage individuals?
1/1/2023 – 22/11/2023 44 6
1/1/2022 – 31/12/2022 13 3
1/1/2021 – 31/12/2021 0 0
1/1/2020 – 31/12/2020 0 0
1/1/2019 – 31/12/2019 0 0

What is the  cost of carrying out a single test purchase investigation?

We do not hold this information.