Liquidation costs are anything from €2k to €5k, it depends on circumstances of the company. Try googling low cost liquidation. Voluntary strike off is approx €600 and is also an option by the sound of things.
Have you considered taking your termination payment and selling the company? If a corporate structure bought it , they get their hands on the cash (via dividends paid up to parent) who in turn pay you the sale price. You then just have to concern youself with paying the CGT and no further costs (apart from making the necessary returns).
So why would another company be interested in this setup? There is no capital gain loss claim for the company you sold (asset stripping rules would apply to them s.621). However, the parent company does get a CGT loss of €199k at the time it sells its shares, provided its within 10 years of the purchase of your company. Interesting stuff if you can partner up with someone who also wants to manage their tax affairs.
As always, specific tax advice is required.