We can't make this stuff up.
If you really read the ad carefully, you would have noticed this:
I wouldn't take the 10% anyway, I would just wait 2 days for a 20% discount to fill and they ALWAYS do.
Remember,
It's about sharing
I didn't realize that Purse.io could be used in Europe too. Just made my account to check it out. 20% discounts get filled? That sounds great!
Yeah but in Germany the authorities were able to pressure Purse to withdraw from the country.
My strong suggestion is to compare the price of your local Amazon (if there is one) with Amazon.co.uk (after the discount).
If it is close, buy it locally.
The best plan perhaps is to just buy things your regularly need off Purse.io. Every month buy a little BTC to cover that cost. The discounts add up.