Mr PC wrote:
I got a $200 list price Dolica at Costco recently for $80 when they were on sale. It does fine with my D5200 and a 55-300 Nikkor. It's graphite which means light weight. It has a ball head and a carry bag with a strap. This seems to meet your lightweight and cheap criteria. The legs have the screw type release rather than a latch, but they work fine. I've done some nice night city scapes using it.
Mine arrived today. Very light weight, but not sure it will support Sigma 150-500mm. I got it for travel with smaller lenses.