No, don't buy a chinese stone
I keep getting people telling me they don't think the Chinese stones are doing the finishing job they think they should be getting from a 12k stone. The last fellow, last week, actually put a finished razor under a scope from his chinese and from his coticule and said the chinese was rougher. I have found the same thing. We know there is no standard of roughness for natural stones and one country's 12k just may be another country's 6k. The guy has reverted back to a coticule.
If money's tight, buy a bout coticule for $65. You won't regret it. You'll get that extra 10% of performance out of your blade that you know is still in there.