Check out the community colleges in your area. Most offer online courses. And are accepted by the majority of programs you would be applying to. With the sciences, the lecture part is on line.. But most of the time labs are in person on campus. My cost was 99$ per credit hour plus fees.
As always. Check with where you want to go to make sure the courses will transfer so you don't waste your money.
In all my science labs there were people that were applying to all the nursing programs in the area and were taking their prerequisites at the CC to save money.