From nextbigfuture
The plus or minus 20% of large versus many smaller modules is less than the 300-600% cost differential of a reactor built in the United States or Europe versus a China or Russian built reactor. Small modular reactors allow the cost advantage of China and Russia to be obtained for nuclear reactors, just like the cost advantage of things we buy from Walmart.
Nuclear reactors built in China cost about $1565/kw.
Russia is also planning for sub-$1500/kw reactors.
