Looks like a good deal.
There looks to be a mistake in the description. 12 x 18 in is closer to A3 size paper rather than A2 size paper. A3 is around 11.7 x 16.5 in, A2 is around 16.5 x 23.4 in in size.
I might eventually purchase that model. I have a large format printer and can print it at the designed size.