Maxwells Attic offers this 6-Piece Bamboo Negative Ion Bed Sheet Set in Gray, Ivory, or White for $44. Coupon code "MAX1943" cuts it to $40. With free shipping, that's $50 off list price, tied with our mention from last week, and the lowest total price we could find. It's available in full, queen, king, and California king sizes. Each set includes one flat sheet, one fitted sheet, and four pillowcases.