A one-trip container costs a multiple of a used one, and the refurbishment trade sits between the two adding value through repair, painting and conversion. That margin is the business. Used shipping containers move in real volume. They come off the ships, get inspected, and go on to second lives as storage, site offices, modular buildings, workshops and increasingly housing, with container architecture now an accepted building method carrying planning precedent.

Someone searching the singular is usually looking to buy one specific unit, which makes this form the better fit for a product page, a dealer, or a conversion business. Used shipping containers trade in volume as storage, site accommodation, workshops and building components, with the refurbished segment adding repair, painting and modification between the shipping trade and the end user. Container conversion moved from novelty to an accepted building method with planning precedent, which widened the buyer pool considerably.