Sam's Club offers its members the Martex 225-Thread-Count Sheet Set in several colors with prices starting from $14.98 with free shipping, as listed below. (Non-members pay $1.50 to $4.70 more.) It includes a flat sheet, fitted sheet, and up to two pillowcases. The sizes:
  • Twin from $14.98 (low by $10)
  • Twin XL from $22.98 (low by $7)
  • Full from $26.98 (low by $6)
  • Queen from $34.98 (low by $4)
  • King for $46.98 ( via eBay has it in select colors for a few cents less, however Sam's Club has it in Blue for $26.98, a low by $20)
Update: Shipping now starts from $1.98.