Quotation for NGV conversion kit

Somebody sent me a quotation for the cost of vehicle conversion to NGV. Anybody care to comment on the pricing?

NGV Conversion Quotation (Carburetor , Fuel Injection 4 or 6 Cylinders and extra Cylinder)
No Items Description Price (RM)
1 NGV Conversion Kit (For Carburetor) 2700
- Consist of NGV Conversion Kit for Carburetor
- Consist of NGV Cylinder
- Installation fees included
2 NGV Conversion Kit (For Fuel Injection) - 4 Cylinders 3500
- Consist of NGV Conversion for Fuel Injection (4 Cylinders)
- Consist of NGV Cylinder
- Installation fees included
- Gas Mixer charges on item 4
3 NGV Conversion Kit (For Fuel Injection) - 6 Cylinders 4000
- Consist of NGV Conversion Kit for Fuel Injection (6 Cylinders)
- Consist of NGV Cylinder
- Installation fees included
- Gas Mixer charges on item 4
4 Gas Mixer charges that vary from car to car RM85 to RM150
5 Extra Cylinder (For extended range) 1300

Notes:
a All price are fixed and in Ringgit Malaysia
b Kit: Our kits are made by GN Group of Argentina and it normally consists of reducers,high pressure steel pipe, fuel switch, indicator, solenoid and other accessories. For more info on this product pls visit www.gngroup.com.ar
c Cylinder: made from high quality steel material and are manufactured only by a limited few world over.They need to withstand pressures upto 200bar or 3000 psi. Our cylinders are from Cilbras, Brasil,one of the world leader in the cylinder business. For more info on this product pls visit www.cilbras.com.br
d 1 day Installation (Early morning sent to workshop, complete in the evening)
e Prices are subject to change without notice