I've bought Ego's from the Philippines. They are totally fine if you
buy from a good vendor (like anywhere else in the world, of course). Given the list of their "distributors" under contact us, I recognize some of the names and think this is just a webstore for one of the larger distributors of PV stuff here. If so, then they would be reliable.
Though, FYI, this package is not a Joye Ego battery. Its similar to the non-Joye Egos for sale everywhere (the 4.2v full charge is the tip off). However, this one does seem to offer some extra features I haven't seen before. Guess I'll pop by Makati Cinema square and pick one up. When I do I'll let you know how it works. I know it won't work with my Ego Booster though.
Edit: No stock when I was there today. Guess it will be later. PM me if I forget about this (very likely).