I volunteer in a charity shop and it costs me a FORTUNE as we get so many lovely things and I always have finds.... Love hearing about what other people have found too.
In the last fortnight i've picked up an immaculate Cos navy top for £6, similar to ones selling in store for £70 and a Boden cord dress for £10 which was probably £50 or £60 new. Oh, and a packet of Aristoc bodyshaper tights for 99p.
Reckon that 25% of my wardrobe is now great quality second hand and that percentage is going up all the time...