difference between O2 Online Pay & Go and O2 Pay & Go talkalot

Hi everyone,

I browsed O2 website, and I am not sure to understand the difference
between O2 Online Pay & Go and O2 Pay & Go talkalot.
I got free sim cards from their site, can I register to either of their
tariff?

Can I apply for International Caller Bolt On on both options?
In the terms and conditions, they say:
"Bolt Ons are available on Pay & Go Original, Pay & Go Talkalotmore,
Favourite Place, O2 Trio and Pay & Go Talkalot tariffs. "
but on the O2 online Pay & go it says:
International calls from UK £1.50 or buy the International Caller Bolt
On™

O2 Online Pay & Go seems more interesting as you only have to top up
£10 a month to benefit of it. But did I miss something?
Thank you very much for your answers.

Cambrion

Nobody can help me to understand better their offers?

Cambrion