You are given a sentence in English. Your job is to translate the English sentence into Polish.

The DVD, as you know, was introduced in the mid-1990s and it was quite expensive. But you can see that by 1998, it had fallen below 400 dollars, and 400 dollars was a psychological threshold.
DVD, jak wiecie, pojawiło się w połowie lat 90-tych i było dosyć drogie. Ale, jak możecie zobaczyć, około roku 1998 jego cena spadła poniżej $400 i to poziom $400 był psychologicznym progiem.