In industry, an equipment manufacturer hardly ever sells directly to the end user. They supply distributors in bulk at a negotiated price for each shipment of however many units the distributor orders. The price-per-unit varies accordingly, so there's no point in listing it the way you would for retail products.
If you only need a single unit of a product, generally the manufacturer is not going to want to do business with you. They produce many units at a time, as required to supply their distributor(s), in order to use their facilities and personnel efficiently.
What you need to do is find a distributor or wholesaler who carries that manufacturer's products and is willing to sell directly to you (retail business). Grainger is one example of a company that does this, though you may have to work for a company that has a business account with them in order to just walk in and order a single item.
You can usually find the contact information for a local or regional distributor on the company's web site or in their catalog, provided they do business in your area. Sometimes, especially when dealing with a foreign supplier, they won't have an existing business relationship with anyone in your region, and then you may need to look for an alternative product or work with a foreign distributor as well, which can be a real headache for just one piece of equipment.