"in quantities" is correct and usable in written English.
It is used to indicate an amount or a number of something. For example: This store sells fruits in quantities that fit any budget.
Meanwhile, hate mail started pouring in, in quantities Clancy would eventually measure "by the ton".
A nose can detect aromas present in quantities of a few parts per trillion.
Try a healthfood shop, most of which sell these in quantities larger than 100-200g.
Carrying liquids in quantities greater than 3.4oz (100ml) has not been permitted since 2006.
Creating them in quantities that can be seen from far away requires extreme conditions.
Nokia, Motorola and Samsung produce handsets in quantities measured in millions.
Cobalt sulfides occasionally occur in lead-zinc deposits in quantities sufficient to justify their recovery.
You also waste money, because points are sold only in quantities that aren't evenly divisible by a song's price).
That chip, which Intel has been calling Deerfield while in development, costs $744 in quantities of 1,000.
And when the price is right, Mr. Lidle buys in quantities that would make a less stout-hearted retailer cringe.
Intel released a 1.13-gigahertz Pentium III that sells for $990 each in quantities of 1,000.
