just buy a wheel barrow from b&q, remove the barrow and replace with strips of wood. works well and costs less than £50 not the price they are charging.
No electric motor and it looks like seriously dubious off-road performance, but I had noticed that tomorrow (Monday) Lidl's should be having a £30 150kg load-bearing wheeled trolley. http://www.lidl.co.uk/cps/rde/xchg/lidl_uk/hs.xsl/index_24956.htm
Just a 'heads up' in case it was of use to anyone.
The lidl's offering: Might be OK in a smooth, hard surfaced apiary or honey house, but not a lot of good out in the sticks. Might as well get a Draper sack barrow with the large wheels.