Yes, You can pay Rs. 98,000 before joining the GGPAP program. The program essence is to collect the fee once you start earning. However, you can also pay in advance. If you pay Rs. 98,000 in advance, you will get Rs. 20,000 discount on overall fee.
For example: if you get a 5 LPA package, your total fee is Rs. 1,25,000 which is 3 months gross salary. Since you already paid Rs. 98,000/-, the difference amount that you need to pay is 27,000. As you paid the fee in advance, we will give you Rs. 20,000 discount. So, finally you need to pay only the remaining 7,000. You save Rs. 20,000 with this option.