NICHE MARKETS ARE WHERE THERE ARE GREAT PROFITS.FOR EXAMPLE YOU CAN PICK UP LADYBIRD BOOKS FOR PENCE FROM CAR BOOT SALES.HAVE A LOOK ON COMPLETED UNDER LADYBIRD BOOKS,THEN SELECT HIGHEST PRICE-IT IS QUITE AMAZING HOW MUCH MONEY SOME OF THESE CHILDRENS BOOKS CAN MAKE-£20.£50,£100,£200+++.......HOPE THIS HELPS INSPIRE PEOPLE NOT TO GIVE IN,THERE ARE PLENTY OF BARGAINS STILL OUT THERE.