Doesn't seem too bad, basically get £4 off the purchase of something you want via a button.
Buy Dash Button for £0.99 and get a £4.99 discount after your first press.
Ends Tuesday, 22nd November 2016, 11:59pm. Offer valid while stocks last.
Amazon Dash Button is a Wi-Fi-connected device that reorders your favourite product with the press of a button. Each Dash Button is paired with a product of your choice, which is selected during the setup process. When you're running low, simply press Dash Button—ensuring you never run out of your essentials again.
This offer is available to Prime members only.
When you buy Amazon Dash Button for £4.99 and you press it for the first time, we will deduct the same £4.99 amount from your first order on Amazon.co.uk as long as the order results in an actual purchase. The £4.99 amount will be allocated proportionally among all qualifying items in your order(s). If your order amount is lower than £4.99, the difference will be deducted from the amount of the following order on Amazon.co.uk as long as this order results in an actual purchase.
The £4.99 deduction only applies to eligible products sold by Amazon EU S.à r.l. through Amazon.co.uk.
The £4.99 deduction does not apply to the purchase of Amazon Gift Cards, Warehouse Deals items, delivery and handling charges, gift wrapping costs, digital content, baby and infant formula.
The deduction applies only one time per Dash Button, only to the customer account connected to Dash Button when you make the first press.
This offer is non-transferable and may not be resold. There is no cash alternative.
This offer may not be combined with other offers.
Amazon reserves the right to modify or cancel the offer at any time.