"less sold" is correct and usable in written English.
You can use it to compare the amount of two objects being sold, for example: "This type of car is becoming less sold, while the demand for SUVs is increasing."
I am less sold on the sentence "just use a grater – it will be quick".
We'd judged the number of performances well, and it more or less sold out.
Local bankers say the bank had more or less sold out of its Greek bond position by early 2010 as Greece's problems became evident.
To the relief of officials, that seed had yet to be sold to farmers, much less sold to countries with more stringent regulation of genetically modified agricultural products.
More or less sold off as an adolescent to Mister (Isaiah Johnson), Celie has no defenders, and thus no love, until Shug Avery (Jennifer Hudson), an itinerant blues singer, appears.
The new plant also will turn out the Chobani Bite, a small cup of yogurt, 100 calories or less, sold in a cluster of four and intended for snacking.
Sure, an unlocked iPhone 5 starts at £529; but an iPhone 4 is more than £200 less, selling for £319.
When this strength has been depleted, it takes less selling activity to change market direction.
Volvo was far and away the most popular in the category, although it costs on average $10,000 less, selling 17,185 units in 2003.
Less water sold is less money earned.
"Working less means selling less wine," he said.
