You can find nice fabric on clearance on many online shops. Does it have to be king size? The couple will probably have a guest bed that won't need a big size quilt. And you don't know if the bride will want to use the quilt in her decor. A king size quilt takes up a lot of storage space. Tell you friend you had to reconsider the quilt size and it will have to be for a regular size bed and don't offer any excuses to why.