The week before Mother’s Day Barnes & Noble slashed prices for its Nook HD and Nook HD+ tablets. Last week, the bookseller did it again, this time ahead of Father’s Day. That sale was supposed to end yesterday, but this morning B&N announced that they’re extending the price cuts until … they decide to stop. If you missed out on getting a $130 Nook HD or a $150 Nook HD+, now you have more time to gather your pennies. The sale is back on.

We don’t have a time frame for when this sale will end, making it hard to tell if urgency is required. It could go on for months since the official reasoning is that B&N wants to help customers “gear up for a great summer reading season.” Or it could go on until there are no more Nook HD and HD+ units in stock. That’s a disturbing notion, but wouldn’t be completely unexpected. Rumors have swirled for a while now that Barnes & Noble intends to sell off the Nook Media division. This could amount to a clearance sale, but that raises the question of whether you want to buy a tablet with an uncertain future, even at a low price.

There are reasons to go ahead and jump on this. The Nook HD and Nook HD+ are both good tablets with great design, beautiful screens, and access to the Google Play Store. We like them both, but the Nook HD+ in particular stands out as one of the least expensive yet still good tablets in the 9- to 10-inch size.

You can get the heavily discounted Nooks at Nook.com, Barnes & Noble stores, or any of the retail partners like Best Buy and Radio Shack.