Oloong SP-690 II TTL Auto Zoom Speedlight/Speedlite Flash for Nikon D3000, D5000,D3100,D5100,D7000,D50,D60,D70,D70S,D80,D90,D200,D300,D300S,D700,D3S | Eachshot.com
PRO FLASH + 36 LED LIGHT FOR NIKON DSLR D3000 D3100 D3300 D5000 D5100 D5200 D40 | eBay
Nikon D5000 Review - Flash
Triopo Tr-950 Manual Universal Mount Slave Flash Speedlite for Nikon D7100 D7000 D5100 D3100 D800 D600 D90 D80 D60 D3000 D5000 - China Speedlite and Flash Speedlite price | Made-in-China.com