Minus £20
I originally forked out just £9 for my daughter's Hudl due to a bit of a voucher order cock-up which gave me far more that I deserved. The charging port was pretty poor (hope they've really improved that!), and we went through two in a year.
The positives, not only were Tesco great with no-questions-asked replacements, but by the time I did the last replacement they'd dropped the price, so I got a £20 refund!