To be honest these screening things are a total rip off. €500 is a total joke. A GP will do all this for you for about €100 (many will do it for a standard consultation fee). Make sure you contact your doctor first to make a double appointment. If a problem is discovered you may have to make a second appointment with your GP so bringing the cost up to €150-€170. Nowhere near the €500+ the private hospitals cost. The big difference is because all people in Ireland are entitled to free pathology services. So a GP will charge you for actually taking the blood and sending it to hospital but the analysis of the blood samples is free when done in a public hospital. Private hospitals however will charge you theextra few hundred to analyse the samples.
Private Health Screening is purely for people with more money than sense.
I should add if you are under 40, do you really need screening with anyone? Certainly tests like cholesterol, ECG, PSA, Chest x-ray are a waste of time unless you have symptoms or a particularly strong family history.