Table 2 lists the number of samples obtained by drug type and pharmacy tier. Conditional on delivery, we have 105 samples for Viagra and between 62 and 71 samples for each other drug. Viagra is a lifestyle drug and is more likely to be offered in tier-3 websites, which is consistent with the fact that tier-3 websites are more likely to offer discreet shipping without prescription. Of the total 365 drug samples, 216 are from round 1 and 149 are from round 2.