I was at Academy Sports today and spotted this display:
The item in front is a lightweight mesh shirt with Ansi II reflective tape sewn on it. The camera pic doesn't do the color justice--it's a very bright yellow. You can also see that they have a vest style and a full shirt in the orange color. The full shirt was $16.99. That's a lot more than you'd pay for a vest at Harbor Frieght, but this would make a great warm-weather shirt to wear by itself. I'm thinking about getting one to see how it feels on a ride, but I know going in I wouldn't get full value since I ride a recumbent with a seatback.