Quotation for cargo lift 2.5m 900mm 400kg

Customer: I am interested to purshase similar product.

Below are estimate specs. 
Lift height of platform: 2-2.5m
Max height of post, platform side rails, and equipment components = 2.5-2.7m
Platform dimension max 90x90 cm
Platform side rail height 50cm
Removable platform side rails, 
Two post type
Capacity: 200-400 kg depend on cost， 
Electric powered or manual

RAMHOIST: 4500 USD for cargo lift 2.5m 900mm 400kg

Customer: Plz suggest another cheaper design of same concept. This appear to be very heavy equipment with cost of $4500. Capacity of 150-200 kg is accepted

RAMHOIST: 4000 USD for cargo lift 2.5m 900mm 200kg