B&H has the Sigma 70-300mm DG OS lens in Nikon mount for $199 (compare at $359). Check it out here at B&H Photo.
Canon has extended the DSLR and bundle rebates through April 26. Key deals include up to $250 off the Canon 70D, Rebel T5i or Rebel SL1. Check them all out here at B&H Photo.
B&H has the Hoya 72mm NDx400 filter for $44.95 (reg. $75) with free shipping. There is a limited supply at this price. This is a 9-stop ND filter. Check it out here at B&H Photo.
The Panasonic GF2 with 14mm f/2.5 lens is available for $299 ($699). Check it out here at Adorama. It’s also available in silver or red.
Note that the GF2 has been discontinued for some time; however, the 14mm f/2.8 lens sells alone for $322. Adorama must be clearing out the last of its stock, so don’t expect this to last long.
The 4K Canon 1D C now has a $2000 instant rebate, which brings the price down to under $10k for the first time. I’m not sure how long this deal lasts, but you can find it here at B&H Photo.
B&H has the Canon EF 40mm f/2.8 STM lens refurbished for $149.95 (compare new at $199). Check it out here at B&H Photo.