They are ordered wholesale and also consumed in bulk.For each order, the production costs are optimized, and the appropriate technique and type of printing is selected. Graphic designers, DTP operators and printers deal with this.
They are responsible for the quality of the printout and as soon as something is wrong they are the first to be targeted by the dissatisfied boss.
Their work is quite hard and I have to admit that you have to really have a fuss to do it.
Work after hours, maximum focus and responsibility - definitely not work for everyone.
In contrast, cheap printer toners can be released for sale by companies that can reduce the cost of their production or be covered by some kind of promotions or rebates.Thanks to that, their buying does not strain the home or company budget and allows for even bigger savings. On the other hand, it can be said that it allows the sellers themselves to acquire new customers.
In some situations, you can also use the free delivery option for printer inks and thus introduce home savings or reduce office maintenance costs.