Table lamp prices are all over the place, but most land somewhere between 100 and a couple thousand dollars. The lower end usually covers simple, mass produced designs made with lightweight bases and basic shades. These work fine if you need something functional and affordable, especially for a guest room or secondary space.
As you move into the middle of the range, you start to notice the difference. The base feels heavier and more stable. The finish looks more refined. The shade diffuses light more evenly. You are paying not just for the look, but for better materials and construction.
Higher end table lamps can cost several hundred dollars or more. These often use solid metal, ceramic, stone, or hand blown glass. Some are made in smaller batches or designed by independent studios, which adds to the price. At that point, the lamp is doing double duty. It lights the room and acts as a design piece.
Keep in mind that bulbs are usually sold separately, and quality LED bulbs can add a bit to the total. If you are buying a pair for bedside tables, the overall cost adds up quickly.
In the end, you can find a table lamp at almost any price point. The real question is how much presence you want it to have and how long you expect it to last.