Baker Agreed to Purchase a Set of Books on Display

Baker agreed to purchase a set of books on display in Black's Book Store.The price for the set was $300,and Baker gave Black $150 to "bind the bargain." Black delivered the books to Baker's home the next day,but Baker refused delivery,as he had found a similar set in another shop at a slightly lower price.
-Baker is entitled to a return of his $150,because the title to the goods had not passed.