Paid about 89 quid a few years ago, it certainly hasn't leaked and I can't complain. Great for cleaning the drive and patio. Bargain.
Same happened to mine . They are total rubbish
This is a similar size to the Karcher K2 Compact. https://www.amazon.co.uk/Nilfisk-Pressure-Washer-Patio-Cleaner/dp/B01MTZWJWA/ref=mp_s_a_1_1?ie=UTF8&qid=1534110915&sr=8-1&pi=AC_SX236_SY340_QL65&keywords=Nilfisk&dpPl=1&dpID=41wmeToDHYL&ref=plSrch
I've had countless nilfisk c120 and all leak after a year or so.
Had it nearly two years use it almost every other weekend all good so far