Hi BJ,
You may already know this but the USD fares are about 20-30% higher than INR fares and also both Jet, IC, etc. offer Apex fares which even knock off 10-20% more. If you buy domestic tickets from the agent here, they’ll charge you USD rates.
You can have some friend or relative in India buy your tickets, and most probably you can avail of the Apex-7 days purchase discounts. You can find the INR and USD fares on IC website, the Jet site we seem to access is their international site with USD fares only. You can assume that Jet fares are @ 5-10% higher than IC’s.
Hope this helps you in cutting down your travel costs.
Good Luck,
Rjain.