The Only Customer in JJ's Second Hand Bookstore

I have a Evernote folder for "career change ideas". (Right now only 2 items.) One of them is to open a second hand bookstore in Taiwan when I retire. Today I was browsing some blog about the second hand bookstores in Taiwan and one thing struck me. Some of those bookstores didn't have many books. "Those are just books I like to read", one owner explained. Wow, I told myself, looked like I wouldn't even need to buy books to open my second hand bookstore. Just my current books are more than enough. Of course, I am sure there are will only be one customer in my bookstore, me!