Buying electrical supplies | building in the village

Here are the costs of the electrical supplies per item :
8way flax db……..$7,50
10 by 19 mm conduits…….. $1
1pack couplings…………..$5,55
1 pack nipple's………….$3,69
1 pack 20mm saddles………….$8
I box by wood screws……………
200 ml solvent cement……….. $1,70
6 by 3*6 flash boxes…………….$0,73
5 by 3*3 flash boxes……………. $0,50
6by double sockets……………. $4,80
1 by 3 gang switch……:::…….. $1,95
1 by 2 gang switch…………….. $1,56
3 by 1 gang switch……………..$0,96
15 by round boxes……………..$0,31
8 by round covers………… $0,09
6 by lamp holder…………… $0.35
10 by 5 watts bulbs………… $1.22
3 by bulk heads/ water tight glass………$2,68
1'5 mm cable red by roll……….$24
1,5mm black cable by 40 meters………..$24
2,5 mm cable black by 40 meters……….$39
2,5mm cable red by 40 meters…………$39
2,5mm cable earth by 40 meters………$$39
Earth rode………… $1,50
Earth 10mm by 6 meters…………$2,17 per meter
1kg clout nails …………..$3.22
60 amp single pole…………$3,48
30 amp MCB……….$2,61
20 amp MCB…………. $3,38
5 amp mcb…………..$5