Here are some online platforms and colleges where you can pursue degrees in Economics and Political Science at relatively low fees:

1. Indira Gandhi National Open University (IGNOU) : Offers online and distance learning programs in various subjects, including Economics and Political Science, with affordable fee structures.

2. University of London : Provides online degrees through its International Programmes, including Economics and Political Science, at competitive rates.

3. University of Phoenix : Offers online bachelor's and master's programs in related fields. Their programs are generally flexible and have varying fee structures.

4. Coursera and edX : While not offering full degrees, these platforms provide access to individual courses and specializations in Economics and Political Science from reputed universities, which can complement your learning.

5. Southern New Hampshire University (SNHU) : Offers affordable online degrees in various disciplines, including Economics and Political Science.

6. Open University (UK) : Provides flexible online degrees in various subjects, including Economics and Politics, often with a lower fee structure.

Make sure to verify the accreditation and recognition of these programs to ensure they meet your academic and career goals.