some places to find good bargains on decor/household items would be markets or charity shops or even second had stores. you are more likely to bargain with the people if the price seems too much.
great things you could find would be awesome old books (i know my sisters would absolutely love that!) for next to nothing!
old vases (look out for small cracks, stains, chips), lights (all you do is have them rewired and they will be good to go!), tea sets and lots more. if you take a look at the image i found one such lamp for 20bucks!! no lie
its awesome really:)
so get out there and look around, you never know what you could find:)
Look what i found for 8BUCKS . . I could not believe the price when the lady told me. R8, i so bought it:) Charity shops are the coolest places to find vintage/out of date decor (but look at the condition before buying)