This seems incredibly pricey, especially for the services you seem to be promising (which, for all the airports I spot-checked, amounted to Meet and Greet, Custom Assistance, and Transport Assistance). Fast tracking was not covered in the base price for any of the airports I checked. Connecting flight service is $745 per person!!!
Your example pricing was for 2 people, but I checked and it looks like the price for 1 is the same—SFO is $375 (for both 1 and 2 passengers), likewise for BOM ($340 for 1). Given how much you are pushing the business traveler angle, I think it'll be more honest to talk about price per passenger, as business travelers rarely travel in pairs.
Business travelers typically travel light, and might not need as much baggage assistance or custom assistance. Likewise, you only claim to provide assistance booking transportation (the passenger pays for the actual transport), which means that unless someone is traveling to a very very 'foreign' land (where no one speaks English, the signage is very confusing, you are very likely to be cheated, etc. etc.) I don't see too much value coming out of the service for most travelers.
I understand it's a discretionary spend, and that you can charge whatever you want, and that three or four hundred bucks is throwaway money for many business travelers (or their companies) but I was personally quite disappointed to see the pricing, because I was hoping to use it to get, say, an aging parent through all the airport hassle. For 50-100 bucks, worth considering. For 400, not so much.