California

You should complete your B.Com first with very good grades. After that, you can apply in some universities.

Tuition fee for international students may range from $30,000 to $50,000 a year if you are talking about Masters. It is advisable if you check the university websites for the fee break-ups, also these are subject to change so always refer the website for updates.

Yes. you can. Grades should not stop you from applying for good universities. Appear for SAT and TOEFL exam, prepare a very good personal statement and your application well. Chances may be less in the top universities, but good application materials, and test scores work most of the time.
Best of luck.

Hello Rahul,
Yes, you can get admission in these colleges but for that you have to contact the university and have to give IELTS exam. Then you have to apply in an embassy for visa if the university accept your application then you will get the visa easier.

Hi Surpreet,
Assuming you are referring to the LA campus, here is the URL to the fee structure. You will find the information here:
http://www.calstatela.edu/financialaid/cost-attendance

1. Engineering – Master's
1.1 Average Verbal: 157
1.2 Average Quantitative: 165
2. Engineering – Ph.D
2.1 Average Verbal: 159
2.2 Average Quantitative: 166
3. Education – Masters
3.1 Average Verbal: 158
3.2 Average Quantitative: 153
4. Education – Ph.D
4.1 Average Verbal: 158
4.2 Average Quantitative: 154

You can check the below mentioned link:
http://www.hotcoursesabroad.com/india/test-preparation/how-to-prepare-for-gre-exam/masters-in-usa-without-gre-gmat/

You can appear for GRE and TOEFL/IELTS exam. You need to score high in both the exams. This is the primary criteria, if university have its own unique criteria, then you can check their website.

Hi again,
You need not worry about the Teacher Report. Please register yourself on Common App, the college will invite your teachers to submit the recommendation form. However keep your school counselors informed. 2 teacher evaluations are required. Remember you need to add colleges you desire to apply on Common App portal. Once you add them detailed information and requirements will be displayed. Good Luck.