I am assuming you are not located in the UK. You need to check local retailers in your country.1. How much does 8GB RAM costs?
You need to check local repair shops and ask for an estimate, doing directly from Samsung is likely to be more expensive2. Maybe how much does it costs to repair Notebook Samsung NP355E4X screen? in MYR currency.
not very good, even not very demanding games are likely to be unplayable3. Is AMD Radeon™ HD 7310 Graphics good for gaming? Thanks.