Very useful tools (especially the cut repeater and the sander repeater), with very smooth operation.
One could do the same job, without them, but it would take much more time and effort and the result might not be as good and as accurate.
I do not have experience with electric sanders, but the manual control of the spinning speed is very handy. The only reason I would prefer an electric sander is if it had a 'foot control' for the spinning speed, in order to have both hands free.
As they say, a technician is only as good as his tools are!
Of course they come with a price and it is quite high, especially if you have to pay the transportation cost to EU, which is also quite a lot. By the way, shipment and packaging were fine.
In conclusion, I would say that if price is not an issue, they are a must have tools.