Amazon and Barnes & Noble have lowered some of their tablet prices for Mother's Day, with savings ranging from $20 to $50.

Barnes & Noble's 7-inch Nook HD can now be had for as low as $149. The 16GB variant of the 9-inch Nook HD+ now costs $179, while the version with twice as much memory costs $209.

Amazon quickly followed B&N's example, lowering the price of its 16GB Kindle Fire HD to $179. The 32GB variant of the same device now costs $209. To take advantage of the deal, use the code "FIRE4MOM" at checkout until May 12.

Image courtesy of B&N, Amazon