Zenni Optical. My glasses were only $30, and the prescription sunglasses were $40. At that rate, I could have bought ten pair and still they wouldn't have been as expensive as my last pair. So...you're welcome for that tidbit.
If you don't wear corrective lenses, you are quite a lucky duck. However, this shouldn't stop you from getting a fabulous new pair of frames. You can treat yourself to a new pair of sunglasses or even fake eyeglasses just for fun. Of course, they can be fancy and expensive or just something cute and trendy from Target. You decide! A spinster sometimes just needs (or just wants) a little update to her look for her birthday, and glasses are an excellent place to start!