This is quite an interested question but there is a lot more in getting a space designed. Firstly, designers always know the best places for any sort of material or item you might be looking for. Time and money may not be a constraint for you but why get your mind boggled with bargaining and selecting the best showroom for your requirements when there is always help at hand. Plus, there are a lot of technicalities that are involved with designing a room which probably are best known to designers.