It should be noted that some centers that sell finished projects often conclude cooperation agreements with official dealers of famous brands producing building materials. Therefore, the contractor, concluding an agreement with such a company, has the opportunity to purchase high-quality materials, for example, dry construction mixtures with a decent discount. Of course, with wholesale purchase, you can use the services of intermediaries, but it will still be better and more correctly to monitor the purchase of building materials, since it is easier to control the costs.