Not worth it in my mind:
- No individual reflectors and not enough space to add them later, you need 2.5" between bulbs to fit good quality individual reflectors.
- Bulbs are likely worthless and will need replacing
- Same deal with the ballast, most of these imports use cheap ballasts which eventually fail or periodically shut down from too much heat.
- Only thing left that looks half decent is the fixture body unless it's plastic. Also poor ventilation combined with the bulbs being too close will result in lower efficiency and bulb life.
You can put together a retrofit for around the same price with better parts.