Hi. I had one of the little 2 stroke gennies, you can buy them for as little as 70.00. Mine worked fine for about 2 years but then it packed up, but only due to dirty fuel. I then sold in for spares for 26.00 so worked out quite cheap. It also did about 8 hours to the gallon.
My dad has a Honda genny which is now 25 years old, it's never been serviced, not even an oil top up, it works like new and gets some serious abuse too, can't beat an old Honda.
Just checked out the link. WOW thats an astronomic price just for a 2kw genny.. My electric start 6 kw diesel genny only cost 600.00 new..