As with anything, ordering sleepers in bulk can be one of the most cost-effective ways to do so. If you need a lot of sleepers, or if you are able to store the sleepers somewhere until you will need to use them, then you should buy all the sleepers you want in one go. When you are dealing with wood suppliers, they will often be able to give you very good discounts when you bulk order. This is how much of their business is built up – by securing large orders that they can rely upon.
Make sure you are ordering from somewhere you trust, where you know the sleepers will be up to the quality you expect. You should buy from somewhere that comes highly recommended, or somewhere that you have bought from before. This is the best way to guarantee the quality of the wood you are buying, and to know what to expect.