eBay is offering a sitewide discount that takes 15 percent off of your cart’s total. Until 1AM ET, August 9th, shoppers can use the promo code PRONTO15 at checkout for orders over $25 to save up to $100.

The back-to-school shopping season is in full effect, so this is as good a time as ever to pick up anything you might have forgotten — or to give yourself a head start on snagging supplies for less. This coupon has almost no restrictions, other than that it’s good for just a single use, so you’re free to apply to it to whatever you’d like.

To give you an idea of the savings, let’s consider a back-to-school gadget that everyone should have: a game console. Normally $559, this promo code puts the Xbox One X bundled with both PUBG and Madden 19 down to $424 before tax.

Need some more inspiration on what to check out? Our Back to School guide and This is My Next series of product recommendations are both good places to start.

Updated 2:46PM ET, August 8th: We removed a deal for the Nintendo Switch that was current at the time of writing, but was no longer valid when the promo code went into effect. We’ve switched it out for an Xbox One X deal, though the code works on all sorts of tech.