Massage table fitted sheets do not cost any less than a standard flat sheet. However, you may like one over the other based on your personal preferences. The flat sheets must be tucked in but they offer more flexibility and can be used on multiple massage beds, even if they vary slightly in size. Fitted massage sheets cling to the bed better but they do need to be stretched out properly to stay on right. It really comes down to what you personally prefer when using massage sheets.