Microjobs change listings by package..is this possible?

I have a question about microjobs. I want to modify the theme so that jobs posted under a certain listing package will display differently than other jobs.

For instance when a user selects a listing package (i.e. package2) and then posts a job, I either want to make the price show up a flat rate by default on the listings page OR restrict permissions for the user to enter a price for their job.

I would also like to show a specific shortcode on the listings under package2, while keeping listing under other packages the same.

I am hiring a developer to help me do this..but I would like to know if it is possible first..