2,2kw with inverter was around 800 AUD ( I think you are in Australia ).
it is round - with a diameter 80mm ( ask if they can make a sutable clamp to you)
But please see the answer from Wingspread company.
They have changed brand for some of their spindles -
They come with ER20 collets - but ask for everything:
2,2kw spindle + inverter + waterpump +x meters of rubber-tubing
+ 6mm/collet + wrenches - (for some reason they don't have 8mm)
(ask for a set of engravers to.They come with a insert in 6mm collet to 3mm)
I think you will be pleased with this -compared to the hand-router with brushes
And I recomand helix carbide bits - they make a LOT less noise then "normal" bits.
I found good one from
http://www.american-carbide.com/ (but you have to order many and shipping cost is high)
oeSoeraa
2,2kw =2,95HP