Why custom belt conveyors are slow to quote

How much does a belt press really cost? Why can’t any of the sales reply me immediately? Today I received a call from a new customer, on the phone, before communicating the parameters, the customer was eager to ask how much money. In fact, it is very understandable, because regardless of the procurement of any product, for the purchaser, in addition to the quality of the product itself, the amount is one of the most important parts.
But for large-scale equipment, basically belongs to the non-standard customized products, for example: if the project is conveying equipment, then you consult the project, and our company has done before, even if there are similarities, it will not be exactly the same, so the price must be biased or large differences. To commonly used ordinary belt conveyor, for example, that is, the overall length of the equipment is 2m difference, the difference in handling capacity of about 3-5 tons, conveying angle deviation of 5 degrees, conveying the material granularity of different sizes, then the price of the equipment may be a world of difference. Or that all the parameters are the same case, but also because of the difference in materials, resulting in conveying capacity and expectations can not reach the same situation. So why say, customized equipment, need to quote according to customer parameters, is the above situation.
So people for customized series do not understand the case, usually want to know, how much is this thing? Belt conveyor by length? Or width calculation? In fact, are inaccurate, because it is no fixed price, this is one of the characteristics of customized equipment, because it is completely in accordance with the site for one-to-one customization program, so the equipment is produced, is in line with the site requirements and other equipment on the site can be a perfect match.