Starting Thursday afternoon, Park Slope’s 440 Gallery is the place to shop for unique and unforgettable holiday presents (or maybe a well-deserved reward for yourself). That’s because the 14-member collective is selling artwork at dramatically reduced prices ranging from $4.40 to $440 (get it?) during its four-day Holiday Sale. The gallery’s website gives a sense of the breadth of the artists’ diverse styles, and there is sure to be something for every art appreciator on your list. Although the sale runs through Sunday, we suggest going early for the best selection. Hours are 4-7pm weekdays, and 11am-7pm weekends.