It costs about £30 and then you can use this document to send to the Passport office, DVLA, Bank, etc... this way you won't have to get your marriage certificate translated and send multiple copies to all the companies, then spend time explaining why your name is slightly different to your husbands!
actually, a deed poll costs nothing. you can write one for yourself on any bit of paper- as long as you cease to use your old name and start using the new one and you will have witness' signature on it.
Related:Surnames of Polish names ending with an "a"
I have seen the meaning of a few of the suffixs in the surnames. I was wondering if an "a" at the end of a surname has any meaning. I have known a few poles with an "a" including my family.
Surnames ending with an "a" suggest that they are being referred to a female. So when you say:
Mr. Kowalski - it is referred to a male Kowalski
Ms. Kowalska - it refers to female Kowalska
Other than that it doesn't have any special meaning.