Get the best price at Amazon

There are tricky features at the giant retailer Amazon — and many other booksellers — that skillful buyers know how to use to get the lowest prices on products. We reveal for you a few of the ways. Even better, for only a short time, buyers who order the book “Muscular Portfolios” can use a special promo code to get extra percentage points knocked off the already-discounted price. For more information, see our newsletter update.