I just bought a 1m motorised system .
Its a Gibertini aluminium dish,its absolutely huge,its far bigger than I imagined,I might have to distract the missus while I put it up.
I can only imagine her wrath when she sees it,I have it hidden away in the garage at the moment.
I am putting in on the East facing wall where its sheltered so I opted for a Diseqc motor which should be ok.
I went for a Moteck 2100A but there are other makes available,Dark Motor,Clarke Belt,Technomate,all pretty similar ,some have nylon gears,some metal .
Other options are a polar mount and actuator which is sturdier but noisier and slightly more expensive as you need a V-Box .
At the top of the scale then is the H-H Mount like the Jaeger 1224 but that is expensive and pretty cumbersome.
If the site is sheltered a Diseqc motor should be suitable.
Ebay is prob your best bet.