The problem with these sites is people devote their time to answering these ads, they're are like modern day council cleanup scavengers <!-- s:) --><img src="{SMILIES_PATH}/icon_smile.gif" alt="

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You klnow when the council run a cleanup once every few years, where you throw out your rubbish that you might usually have to rent a skip for. and people used to come around, usually in Hi ace vans and trailers, taking anything that my be worth something.
Anyway, the point is that you have to be very quick off the mark to pick up anything decent on dublin waste. I have used it to get rid of stuff in the past, and it is usually gone very quickly if it is worth anything at all.
Here's my suggestion for picking up a fridge, i've never tried it by the way.
A lot of the big electrical shops (like power city) have a big dumping ground (usually a skip or a big trolley) for electrical waste.
There's usually nothing stopping anyone from turning up and using it, whether you are buying something new or not.
You may be able to intercept an old fridge here. whether it be someone just using the service, or someone actually coming in to buy a fridge.
Might be handy if ya knew someone that worked there, or had the neck to ask someone that worked there about the possibility.