UK board member here.
I've used GW within the last week.
One word: Brilliant!
Worth the payment - look at it more of an investment, than as a cost.
I've used GW since a change in personal circumstances affected my (planned) studies, and caused me to need external assistance to complete some research/work.
GW have been polite, delivered on-time, and asked/answered the right queries, before any work was completed.