Importing stuff own your own vs via companies like African Salihiya

How do companies like African Salihiya, Savostore deal with taxation issues; you normally pay a fee by the weight shipped but what about value of items? Why does Posta charge exorbitantly if I have to declare the cost of purchase for a item e.g. computer worth for example $2k? Is it better to go through these companies or import yourself?

Posta charges exorbitantly coz umetumiwa item moja.Salihiya and the likes huleta mizigo in tonnes,na hio computer yako moja becomes part of a one or more tonnes consignment,so the cost of freight is cheaper.Basic maths.

Sijui tax ya posta ama per weight charge. Most shipping companies pale abdulland wanalipisha btwn 6.5-7.5 dollars per kg na unaletewa hadi kwa mlango at a fee kama huwezi iendea. Lately nimetumia Greenlink kutuma complete household stuff na si wabaya

Yoh chief. Umepotea wapi siku hizi

niko chief,niko nitafute