This is the 12569th most frequent Russian word.
комплектом
As a set.
The word 'комплектом' indicates that the furniture was purchased as a single, complete set of items packaged together.
Я купил мебель комплектом.
I bought the furniture as a set.
Here 'комплектом' signifies that the books are grouped together and sold as one combined set.
Книги продаются комплектом.
The books are sold as a set.
In this sentence, 'комплектом' is used to show that the equipment was provided in a complete, associated package.