It will be whatever your network provider charges ! Northern Ireland is part of the UK !
It costs exactly the same as it would to send a message to someone in England, or Wales or Northern Ireland.
60c-90c
That depends on what way you are doing it. If you are talking about text messages, then you need to contact your operator or check their website for prices. E-mail would obviously be cheap and easy.
yes you can
one can get the accurate answer by sending a text message from his/her mobile phone (from Ireland to Bulgaria), later ask the mobile operator for the cost.
No, because fireworks are illegal in Ireland. It is even illegal to bring them over the border from Northern Ireland
Great Britain and the Republic of Ireland
We will send a message on Monday
$1.36
36p
Mail, or something very much like it, was the normal way.I think, however, what you mean is "how can you send a message INTO the past", and the answer is "you can't."
At the current time, March 2013, it costs €0.82 to send a normal letter from Ireland to Canada.