Paid Subscriptions: Change "day(s)" to something else?
 

We want to use the paid subscriptions feature as a way for people to pay for seminars. We figured out how to change the word "subscriptions" to "seminars," but we now need to change "day(s)" to something more appropriate, or simply remove "1 day" in the drop down and replace it with the price only.

How can we do this? Thanks.