When buying books online, you can consider things like: 1. Price: Compare prices across multiple websites, and look for discounts and promotions. 2. Quality: Consider if the quality of the book is worth the price 3. Safety: Consider if the site is safe and has secure payment methods 4. Delivery: Consider if the site has a trustworthy delivery service. 5. Used books: Used books are often cheaper than new books, and many online bookstores offer a wide selection. 6. Postage and packaging: Consider how much it will cost to send the book to you, based on its size and weight