Bigrock charging higher GST than Godaddy

Though they are selling the same domain names from the same registry, it appears that bigrock is charging a higher GST than Godaddy for indian customers .
On 5 July 2017, .org domains were registered with goddady and with bigrock because godaddy was showing the domain name as unavailable. Godaddy is only charging 12% gst and the price of .org domains has reduced to rs 314.72, bigrock is charging 18% gst for some unspecified reason.

Actually bigrock should not charge any tax to paypal account holders with revenues more than Rs 5 lakh

Please note that R&AW/CBI/indian intelligence employees especially gujju domain fraudster asmita patel, obc bhandari sex worker sunaina chodan are not associated with the website as they do not spend any money, only shamelessly take credit and get a monthly indian government salary