richms: Businesses shouldnt be subsidizing the CGA as they should be buying from a supplier on a trade account, which basically has in the terms and conditions that it is purchase for use of a business for use of the business so not liable for CGA and sold at a reduced cost. That is why so many places operate a trade showroom and only sell to people identifying themselves as being professionals.
True to a point but would depend on what was being purchased. Businesses also often have to signup to a trade account first and may have to buy a minimum amount. Many businesses will usually instead buy one off things from normal retail stores, and normal retail stores can sometime undercut the price of trade stores, as they may have better buying power. Some of these trade suppliers can be very expensive.