I've seen these and the mechanical engineering on them is solid and good.
However the electronics might be a weak area. The blister covered control panel might be a concern in the long term, I've seen panels like this fail after a lot of use and dust ingress into that area could cause problems. If the motor or control system does fail replacement is expensive with no other options than repair from Nova whose track record of support in the UK seems patchy from what I've read.
I wouldn't spend £2.5k on that.