have you tried Inventory detail field?

YEs, but system shows me all ex. lot numbers which exists... More over I looking for cost for this items per lot... It's nightmare.

Try using item fields location cost/ location average cost and for the actual lot and serial number you can use inventory detail fields. its headache, but I think you should be able to get it, might be better with SQL, but i am a novice there.

you could use ns_concat in a saved search formula https://blog.prolecto.com/2014/05/16/reveal-both-aggregate-and-detail-in-netsuite-saved-search/