Answer:
A for-profit business will sell things at higher retail prices than they paid to make money off of items while a non-profit will sell for the same price or sometimes lower.
For-profit: Say a company bought a case (24) of shampoo to sell, say the entire case cost $95.52, making each bottle cost $3.98, a for-profit business will sell this for say $5.50 and make $1.52 off each bottle sold
Non-profit: Now say a different company bought the same case for the same price but instead they sell it for $3.98 a bottle, which is the price of each bottle. This company isn't making a profit and is selling each bottle for the same price as they paid for it.