A Cordell James se le ha ocurrido que:

Have any of you bought the $200 Moto G smartphone?

Did yours come with a charger?
If not, what size charger do we need to buy?

My 16GB Moto G came from Motorola (not from Google Play)
and it arrived only with a white USB cable. There is no
charger! That stinks!

Now I have to buy a charger.
But, which 5V USB charger do I buy?
Nowhere in the package does it say the amps needed.

I think this is a reasonable measure.

We are all the day talking about saving the enviroment; producing less
electronic waste, etc... Now that every mobile has the same chrging
plug (with the known exception of Apple devices) and everybody changes
his mobile each two years, I see very logical that phones are sold
without charger (or even USB cord), as verybody has several of them at
home. Obviously, the price should reflect that save (and I think the
Moto G does).

Regarding to your question; any 1A charger will be more than enough...

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Un saludo,
Alberto