total consumer surplus? so here is the question, i figured the answer is from subtracting each price of willing to pay from the actual market price and then adding them up equaling 65 as total consumer surplus. but in my book the answer is 80, i cant figure out how they got 80. heres the question: consider the market for used text books. use exhibit a-4 to calculate the total consumer surplus http://books.google.com/books?id=qXJWU5kTZlUC&pg=PA97&lpg=PA97&dq=consider+the+market+for+used+text+books.+use+exhibit+a-4+to+calculate+the+total+consumer+surplus&source=bl&ots=SLVDb45sng&sig=2NsDHQCl6nIQNtvarS1CPdGRA7o&hl=en&ei=ktGZTrLnHNKssAKu9by8BA&sa=X&oi=book_result&ct=result&resnum=1&ved=0CBoQ6AEwAA#v=onepage&q&f=false its at bottom of page exhibit a-4, i already tried calculating it by measure the cs area but the question does not give me any quantities sold so that wont work, please help thnx

are these camcorders any good? http://www.bhphotovideo.com/c/product/751472-REG/Coby_CAM5002_CAM5002_SNAPP_HD_Camcorder.html the price is good, and i really want a camcorder. i was just wondering if all the things in the description are good? i dont understand the techy talk at all. so if someone who knows about cameras could please answer this that would be greattt! http://www.bhphotovideo.com/c/product/759472-REG/Coleman_CVW9HD_BL_HD_Waterproof_Pocket_Camcorder.html http://www.bhphotovideo.com/c/product/751471-REG/Coby_CAM4002_CAM4002_SNAPP_Swivel_Camcorder.html or one of these??

Fi BL 18 vs AQ HDC3 18? Fi BL 18" vs Audioque HDC3? BL not fully loaded totally stock compared to the HDC3 what is the better buy, about the same price, i need to know some others opinions. running off 1500 at 1 ohm in 6.5 CuFt box at 32. whats the loudest, better buy?

Im looking for a certain book. ? The name of the book is Liber Necris ( loosely translated as " Book of the Dead " ). It was written by Marijan von Staufer and published by BL publishing in June 2006 as a special edition hard cover book. I'm looking to purchase said book, depending on the condition of the book will dictate the price im willing to offer, of course shrink wrapped mint conditions will get higher offers from me.

Fi bl or Re audio sx 18? im trying to decide what one to get. Fi Bl is fully loaded. both have 3" coil, both take 1000 watts rms. what one would be better? The RE is 399.99 and the Fi is 359.99. or what other 18" sub would be good in that price range?

what is nokia battery price? what is the price of nokia bl-4c battery

Which swimsuit should i get? Price doesn't matter and i really like both of these (: http://www.swell.com/Girls-Swimwear/BILLABONG-ALLIE-ONE-PIECE-1?cs=BL http://www.swell.com/Girls-Swimwear/BILLABONG-ALLIE-ONE-PIECE-1?cs=BL Heres links 1. http://www.swell.com/Girls-Swimwear/BILLABONG-ALLIE-ONE-PIECE-1?cs=BL 2.http://www.swell.com/INSIGHT-BLACK-ROSE-ONE-PIECE-BLACK-XS