Buying the portable crane motor system from South africa

I am ismail from south Africa.i am interested in buying the portable crane motor system like the sample,if its 240v then it must be light, I need to lift a weight of 150kg,bet 30 to 60 rev per/min,reversible and forward,i need a spool to take 150m of 8mm rope,the motor must be 12v if possible and as light as possible because it have to be mobile and portable,Light Duty Electric Winch .i need several for all the field staff in my company. approx 37 units.

1-2 to 2hp motor 1,5 to 2 kw

if use our photos sent u, the cost is higher than 300usd, maybe u mean different photos, for different photos, if others can do with 300usd, then we can do 300usd

我想购买便携式吊机马达系统（形如图片），如果是240V必须很轻，我需要举起150公斤的重量，30到60转/分钟，可反转和前转，我需要一根轴装下150m的8mm钢丝绳，如果可能的话，电动机必须为12V 并且尽可能轻，因为它必须是移动和便携的轻型电动绞盘。公司的所有现场工作人员都需要，大约37台。 

 1-2至2HP电机1,5至2 kW

RAMHOIST: 50hz or 60hz?

Customer: 50hz

RAMHOIST: 

RAMHOIST: about 140kg

450usd/unit

is it ok for u?

is 140kg heavy for u need to be customized to less weight?

Customer: Minimum weight is 140kg. I need  to 500kg

RAMHOIST: is 500kg easier for u to carry?

Customer:yes

RAMHOIST: no problem

we can make 500kg weight

do u have any additional request?

Customer: No

RAMHOIST: I assume the weight u lift is 500kg nut not machine self weight is 500kg

pls confirm 

Customer: yes,weight 

RAMHOIST: then this price is correct, lifting weight is 500kg

Customer: yes

RAMHOIST: but in previous message, u said lifing 150kgs

Customer: yes.the motor will stain.

RAMHOIST: so any problem now?

Customer: no 

RAMHOIST: ok

when will u order?

Customer: Send me.prices and specifics on.what you have

RAMHOIST: do u have request for speed? what's the speed u need per minute?

pulling force: 5kn,  power: 3KW, Rope capacity: 7.7mm/50m, speed 25m/min or 12m/min for you to choose

Customer:  I want rope capacity 12mm x 150m and 60 Rev per min

RAMHOIST: pls confirm 

in previous message need 8mm

Customer: now change it 

RAMHOIST: then price is 600usd/unit

Customer: More than making it in my country.  Please be competitive

RAMHOIST: is 570 usd ok for u?

Customer: no

RAMHOIST: 

what is u target price?

do u still use 8mm since with 12mm we must make drum longer, the weight and size increase,

packing cost increase according,

12mm rope also expensive than 8mm, all these lead price increaae

Customer: 12mm

RAMHOIST: we can give u 550 usd for   50% advance payment and balance before delivery

Customer: if 300usd.its ok

RAMHOIST: 

pls send the photo of low price in u country

maybe we mean different item

300 usd is too low

Customer: If you can not do for usd 300. Then we can not do the order of 40 units

RAMHOIST: pls send the photo of 300 usd u asked for

if use our photos sent u, the cost is higher than 300usd, maybe u mean different photos, for different photos, if others can do with 300usd, then we can do 300usd