Amazon is selling the Philips GoLITE BLU Energy Therapy Light, HF3422 [amazon.com]
for $63.99 with free shipping after clipping the extra 20% off coupon.
This model requires AC power and does not have a rechargeable battery, but the coupon makes it $22 cheaper than its cordless HF3429/60 counterpart.
According to my research using price-tracking websites I won't mention here because slickdeals
, this is the lowest price ever on this model by $1.38.