Just missed out on Derby City, but you can likely purchase a tournament used table they sell just after completion of tournaments, at a significantly lesser price than if you call and buy from them directly, if you make the arrangements for transporting it back to your home. You will get the tournament used cloth, that even it's only been used for a week, will have significant break lines, break burn spots, etc. on it, as tournament players are extremely hard on tables!
If you buy from them directly, especially if it is a 7-footer, they may tell you it's a brand new table being made just for you, but still could very well be a tournament used model they'll just put new cloth on. I purchased one directly from Diamond a few years ago that was sold to me as a brand new unused table, but it wasn't until a year later when we recovered it, that we could see from the staple gun dents that it had been recovered before. I never contacted Diamond about it, as it wasn't worth the aggravation and lies I'm sure they would have told me, as otherwise it appeared brand new.
If you keep a check with Craigs List and Ebay, there's always Diamond's for sale, but you'll have to find one in your area, and you'll have to go inspect it to see the condition, and you'll have to cover the expenses and hassle to break it down, transport it, and set it back up. The advantage of paying the higher price to buy direct from Diamond, is that they will deliver and install it for you, usually included in the price.
John Stich in Minnesota is advertising used Diamond 7' tables for sale right now on AZ and FB at sharply reduced prices.