There were 23 people that left comments -- several comments were left twice so I just counted people.
Using RANDOM.ORG, the winner of the stamp set is:
Random Integer Generator
Here are your random numbers:
Timestamp: 2016-03-30 14:20:44 UTC
Commenter #6 is Joyce, who said:
Congratulations, Joyce! I will e-mail you to let you know you won.
Thank you all again for your kind support of my blog...I appreciate each and every one of you!
Have a great day,