I am going to build a sproggy power supply and have diagrams and a parts list... I was informed that maestro sells pre-etched boards for $10AU including postage... Are these still available, i am going to need one .

I see there are several versions of the sproggy (2.5, 2.6, 2.8)... what are the differences in these? (sorry for puttin this in the for sale section but i dont want to buy the wrong board!)