So here's how it works: you buy a deal through Groupon and you'll pay less than you would if you didn't.
That's about as tricky as it gets but you have to be quick as most of them only have a 24 to 48 hour lifespan, when the clock stops ticking you've missed out.
That said, you've got a little longer to take advantage of this Photobox Groupon deal as the time doesn't run out until 11.59pm on Monday 27 June.
So with this Groupon deal, you pay £9.50 for an A4 photobook, that you create from your own photographs, from Photobox instead of £31.99.
Your book will contain up to 26 photographs, they'll be printed on 170gsm glossy paper and it will be bound in a glossy hardback cover.
At 2pm on Tuesday 28 June your voucher will become active and you'll be able to go to Photobox and start creating your book; you have up until the 29 September to do this, so there's no howling rush if you want to take your time or haven't taken the photos you might want to use, from a forthcoming wedding for example.
That's really all there is to it - you pay £9.50 for an A4 Photobox photobook that should cost you £31.99; marvellous!
Happy Photo Choosing!