Here Is A Strobe You Can Buy For 20

As for the power, the flash uses four NiMH or alkaline AA batteries. When it comes to compatibility, these are the cameras listed:

Nikon: D3000, D5000, D3100, D5100, D7000, D50, D60, D70, D70S, D80, D90, D200, D300, D300S, D700, D3S, D3X, D4, D600, D800Canon: 1100D, 400D, 450D, 500D, 600D, 50D, 60D, 7D, 5D, 5DII, 5DIII, 6D, 650D, 700D, 30D, 40DPentax: K-7, K-X, K20D, K10D, D200D, K100DOlympus: E3, E5, E30, E300, E620, E520, E420, E450, E-P2, E-PL2, E-PL1.

The description also notes that the flash is compatible with Panasonic cameras, but no specific models are listed. Here are the specs:

Guide Number: 38 ( ISO 100 )Flash Mode: M, S1, S2Vertical Rotation Angle: 0~90 degreesHorizontal Rotation Angle: 0~270 degreesPower: 4xAAsize batteries ( Alkaline or Ni-MH are usable )Light Quantity Output Control: with 1/8 – stop incrementColor Temperature: 5600KFlash Duration: 1/300s~1/20000sDimensions: 1907555mmNet Weight: 315g

It’s not specified how long this deal will last. But even if you miss it, the regular price of the speedlight is $69.99, which is still pretty affordable. If you wanna give it a chance, here’s the link for orders.