That's the one I've been using. All I can say is it works, and works well, and I get it from a pharmacy that has a reputation for selling quality products. Where can you buy it for 200 baht? I pay 400 or 1000 for 3 packets. I expect the export packaging will be different to the domestic Indian packaging, probably aimed at making it more attractive.
I've never tried Lilly, but I'll probably not try it. I see a lot of their products have the "Cialis" brand name displayed on their packaging, a clear violation of the trademark.
If you're really concerned about authenticity, then you can buy the real Cialis from any major pharmacy, but it's very expensive.