Based on our guide for expatriation to Malta and information from our expat author @jessinmalta:

The cost of living in Malta is relatively affordable, compared to other European countries, although Malta's average wage is also comparatively lower.

Basic grocery costs include:

Milk €0.80/L
Local eggs €0.72/6
Butter (imported) €5.00/500 g
Local Maltese bread €0.60-€0.90/loaf
Barilla spaghetti No. 5 €0.80/500 g
Tilda white long grain rice €1.20/500 g
Apples (imported) €1.70/kg
Banana (imported) €1.50/kg
Oranges (imported) €1.35/kg
Lettuce (imported) €0.50-€1/head
Tomatoes (imported) €1.50/€2/kg
Cucumber (imported) €3.00/kg
Broccoli (local) €0.80/head
Mince beef €7/kg
Chicken breasts €7.75/kg
Ground coffee €2.50-€6/500 g
Bottled water (local) €0.40/2 L
Bottled water (imported) €0.90/1.5 L
Beer (local) €1.20/500 ml can
Wine (local) €3.00-€5.00/bottle

Meals out vary in price range, from €10 for two people at a local pub, to €100 for two people at a fine dining restaurant. For a full meal, with wine, at a family-style restaurant expect to pay €20-€40 per person.

Admission at the cinema costs roughly €5-€10 in Malta. Bars generally do not charge cover fees in Malta. Drink prices at bars range from €1-€10; cocktails are generally €5, wines by the glass €4-€6, wines by the bottle €12+, and beer €2-€4 per pint.

Bus rates are different for residents and non-residents of Malta (you are considered a resident once you obtain your residence permit). Non-residents pay €2.60/day or €2.20 for a two hour pass, while residents pay €1.50/day or €1.20 for a 2 hour pass. Saver cards are also available to students, and cost €21 to top up for 30 days, or €60 for 90 days.

Clothing costs in Malta are relative depending on where you currently live and what price range you normally shop in. There are few discount chains in Malta, with the majority of clothing shops being local businesses or upper range chains (e.g. Zara, Guess, Paul & Shark, Calvin Klein, Diesel, etc.) There are also several high-end boutiques. Essentially, there is clothing to fit every price range in Malta. However, finding good quality clothing for an affordable price can be challenging.

Utilities in Malta are costly, especially for non-residents. Gasoil for heating costs €1.05/L, while kerosene costs €1.38/L. Gas - used in heaters and cookers – is €1.70-€1.80 per kilogram, or €23 for a 15kg cylinder.

Electricity rates in Malta are based on residency status and usage rates (i.e. electricity tariffs rise relative to the more electricity you consume). Tariffs for non-residents range from €0.20 for up to 2,000 units of electricity, and top out at €0.70 for 20,001+ units. Tariffs for residents range from €0.16 for up to 2,000 units of electricity, and top out at €0.62 for 20,001+ units. In a flat-share situation (at a residential rate), electricity costs are generally €50-€90 per month.

Water rates in Malta are based on the registered occupancy of a housing unit. For dwellings with zero (0) residents registered, water tariffs are €2.30/m3 for up to 33 m3, and €5.41/m3 thereafter. For dwellings with one or more residents registered, water tariffs are €1.47/m3 for up to 33 m3, and €5.41/m3 thereafter.

Gas or petrol prices in Malta are costly compared to North America, but comparative to the rest of Europe. As of yearend 2012, in Malta unleaded petrol cost €1.50/L, and diesel cost €1.38/L.

Do you have any other detail? Any comment?