Listing Enhancements question

You know the Listing Enhancements when making a new post/ad…

They are
Front Page Exposure
Highlighted Listing
HTML Listing Content
Visitor Counter
Top of Category Results
Google Map More

These can be selected when someone is logged in and making a post.

They pay for it at the end.

I know you can set up packages and stuff.. But what I wanted to know is there a way to set time limits on

Front Page and Top of Category Results so when they pay for it, it will only be there for 7 days ( for example ) –

Is the only way do set time limits is by making packages and getting people to buy packages at the start. ?

thanks.