1.3Ω is the coil resistance. If you have one more peice of information, either rated vaoltage or rated current, you can determine what driver you need to run it.
Unipolar motors were designed for lower tech drivers. Most drivers available today are bipolar. You can drive a unipolar motor with a bipolar driver (either Biploar series, or bipolar half winding). Unipolar motors will have either 5 or six wires.
1.8/step means these are probably standard two phase steppers, and should run with any of the common stepper drives like Gecko, Xylotex etc.
That 6V 8Ω motor will be a pretty slow motor. Its speed torque curve will be a pretty steep downhill.
I went the super low cost route at the start and soon realised that it is false economy. Even a low cost three axis board will cost you over $100. Once you have the little mini wood/plastic router running, you will imediately be confronted by its limitations. If you jump straight to a Gecko G540, you have something that will also power teh second and third machines, rather than the low cost driver that ends up in a box at the bottom of the wardrobe