I'm a fresh grad who has done 2 internships so far. One of the companies I interned at is offering me $2,500 gross pay. I feel that it is too low, am I being too picky? (It's for a marketing role)?

If the notice to tender resignation is less than 3 months, i say take it first. Then search for a better job in the meantime, 骑驴找马

You need to evaluate if you can learn much from there. If there is no room for personal growth and advancement, then maybe you can look elsewhere :)

It's a good thing that the company you interned with likes you enough to want to hire you. I'd suggest taking up the offer. Get some corporate experience, work on a portfolio of achievements, then move on to something greater. All the best

You need to consider the entire package as a whole, what are the other benefits like, learning opportunities, company brand name, etc, before deciding whether it is a reasonable offer. Don just look a base salary.