Hi! I majored in Sociology, and really enjoyed it. Before I get into what you can do with the degree, let's take a moment to look at the numbers.
Cost of college: Does that include the cost of books, which are very expensive? Even if you sell them back, you won't get nearly what you paid for them. There are options: renting, on-line books, etc, but there are still costs. Does it include the costs associated with transportation, if commuting, which includes car loan, maintenance, and fuel (or bus fare)? Also factor in a fair amount for other "incidentals" which tend to add up. I have had professors who required we turn our work in on a flash drive. You also might do a bit of printing, some of which might be free at the school computer labs, some which you will pay for. You may be required to attend certain functions which charge admission, or might want to join professional associations. You will likely grab a bite to eat while at school. If you like to party, well, that adds up too! If you live on campus, there is a dorm fee to add in.
On-line classes are not easy, and require a lot of self-discipline. They aren't for everyone!
Now let's discuss salary. A degree is Psychology won't necessarily get you $40K a year. It sort of depends of where you live and what job you get. If you work for a gov't agency in Texas, for example, expect a starting salary around $30K. Keep in mind there will be taxes held out of that, and you may also be paying for healthcare, etc.
Degrees in liberal arts are marketable in many different areas, so, I like my degree! What exactly is it that you want to do in the field of Psychology? Are you wanting to do research, marketing, work with people who are trying to work through their personal problems? Go into criminal justice? Public Relations?
When I received my Sociology degree, I became a police officer. I stayed there for 25 years, and got active in police association activities, working to improve the training, professionalism, and working conditions of the officers. After retiring from that, I became a career counselor at a state agency. The pay was horrible, but, because I had a pension also coming in, I was able to live comfortably. Many of my (single) co-workers have filed bankruptcy.
Whatever path you take, I want to encourage you to challenge yourself to hone your writing and public speaking skills to perfection! Also take some classes on budget/finance/grant writing, as many of the available jobs will be for private companies that are gov't funded. They write grant proposals to get their money. You will also want to understand data analytics, performance metrics, or whatever they call it - how success is measured. The more flexible you are, the more opportunities you will have!
Best of luck to you!