Hi Joy,
initially, welcome to the forum
Your best bet, IMO, is to use a step-down converter (believe you can find it easily in your country), rather than getting a 220V AVR is the US.
You may find some stores selling 220V indeed, but it's not usual and for sure you'll pay a lot more than a standard 120V AVR.
I remember there was a store up in Chicago area selling these, but I forgot their site though... Gimme some time and I'll revert to you asap, ok?
There you go:
www.world-import.com