Hi Elaine, and best of luck with the move. Hope all goes well. Like Celeste, I am not too sure if you need a UK/Irish decoder to receive the free-to-air channels, as we brought our Sky box with us (couldn't miss the rugby!). We got a dish here from SFN member Karma Morgan. Clothes are dearer here except in the markets, as are shampoos etc, but I have got used to the Carrefour own brand which is fine. I do miss the tea-bags, but as they are relatively light, it is easy to persuade friends to bring them on visits.
If you have time, take a look at the Renovations group here on SFN. The general take on things is that the standard and colour selection in French bricos is dire, and many people bring their paints from Ireland or UK. As we are still renting, I have not priced bathroom suites, or large white goods. I do need a freezer, and priced one in Carrefour recently for €159 (90 litre) which I thought was reasonable.
If you find a good butcher, you will get good quality meat. The butcher in Intermarché is better than the one in Carrefour here (Lezignan) so I do most shopping in Carrefour and stop off at Intermarché if I want (need) a fillet steak, but that is not very often.
I would, as Celeste suggests, bring some winter woollies. Winter is much shorter here and dryer (usually) but you can find temperatures dropping well below zero for a couple of weeks, but it is a dryer cold not like the long damp winters we remember in Ireland.
Personally, I prefer the foundation and other facial stuff that I used back in Dublin, so I did bring loads with me. I suggest you bring enough of your favourites to get you through the first few months, and then check and see what's available here.
Don't forget to bring originals (where possible) and multiple photocopies of all documents you can think of - birth certificates, marriage cert., driving licences, etc. If you can, scan these as well to PDF, and email yourself (using gmail or yahoo or whatever) with these PDFs. Handy backup just in case.
Best of luck and give us a shout when you get here.