just go to luthuli avenue and you will get good prices for all the stuff , the decoder will set you back around 5k for the kawaida one, the shop may even link you up with a cheaper technician.
What you need
1.Dstv decoder 1132 ( black in colour)
2. 90 cm dstv satellite dish
3.RG6 cable, length will depend on your setup
Then of course labour charges
"You can't have everything. Where would you put it?" - Stephen Wright