[ranerio]

The offer by Claro is as follows:

CLARO
Name of prepaid offer: Claro Pré-pago Ilimitado

Tariffs: (all prices include Rio de Janeiro taxes)

Local calls to fixed landlines: R$0.50 per call (no timing)
Calls to Claro (on net) mobiles to any state in Brazil: R$0.21 per call (no timing)
Calls to other carriers (off net) local mobiles: R$1.60 per minute.


Roaming:
Receive calls: R$2.25 per minute of received call

Data:
R$0.50 a day (10 MBytes at 500 kbps) (default)
You can also use packs which you need to subscribe to.
150 Mbytes: valid for 15 days, price R$6.90, max speed 500 kbps.
300 Mbytes: valid for 30 days, price R$11.90, max speed 500 kbps.
100 Mbytes: valid for 30 days, price R$22.00, max speed 1.5 Mbps.


SMS:
R$0.50 a day for any number of SMS, any carrier (on net and off net).

Recharge are available on most stores which accept credit cards for payment, they can usually issue electronic vouchers with the same machine, or you can buy cards at newsstands (they are not so common anymore, the physical ones), in R$13.00; R$18.00; R$22.00; R$30.00; R$50.00; R$100,00; R$150,00.

R$18.00 recharges are valid for 60 days.
R$22.00 recharges are valid for 75 days.
R$30.00 recharges are valid for 90 days.
R$50.00 recharges are valid for 120 days.
R$100.00 recharges are valid for 180 days.
R$150.00 recharges are valid for 300 days.

The SIM card costs R$10.00 and comes with R$10.00 included.

You can check the balance dialing *555# you'll get an SMS with the balance.