Yeah, when I found out about Kill-a-Watt, I was disappointed that they didn't have 220-240V versions of it. When I searched for an alternative from the only 1st world I know that uses 220V; UK, I saw a lot of generic ones. I have a pending order of a generic copy from Singapore via eBay which I placed 3 weeks ago. Snail mail sucks.
I got the Omni from Ace Hardware, SM North EDSA Annex. Costs a little under P1k. I was in my usual "alone-time-hardware-browse-mode" when I spied upon it at the electrical section. The Omni model looks exactly like the generic ones (re-badged, no doubt). Anyway, I was actually surprised to know that it's already available locally now. I wished I hadn't ordered online.
Sulit have the Omni on sale for about P850-950 apiece.