The phrase 'much less cost' is correct and can be used in written English.
It is used to compare the cost of two things, for example, "We can build the new library for much less cost than renovating the old one."
MOOCs can provide a similar experience with more flexibility and at much less cost.
The Internet has extended his reach by quantum leaps and for much less cost.
"For example," he said, "military bases away from central cities where it is easier to provide security at much less cost.
"It would have been a waste to do that last year, when you could get comparable production for much less cost," he said.
Treating addiction as a mental illness would allow the governor to redefine who is a criminal, enabling us to treat addicts in their community at much less cost.
Boutique players should stop saying they are providing patients with special services when many doctors already provide the same services at much less cost.
It is axiomatic that in the current epoch, it is much less cost-intensive to build out a new brand than to try to walk back the cat on a legacy business.
For one thing, export growth, after several good years, has stalled, partly because nervous international investors, rushing into assets they still consider safe, have driven the dollar up against other currencies — making U.S. production much less cost-competitive.
These figures were compared with much less cost-effective measures in Finnish agriculture at an average marginal cost of 220 euro/kg phosphorus [12].
Livestock reductions and most other agricultural measures investigated by [14], except for modest (no amount specified) reductions in fertiliser application, were less or much less cost-effective than urban sewage treatment and phosphate free detergents.
The ICER for DNA3, DNA5, and DNA10 are much less cost-effective than other screening strategies but still remained cost-effective compared to No Screening.
