Meaning of プレミアついて２０万

Question

Context: two high school girls talk about an expensive ring.

Girl A:　 花江！そのリングどうしたの？それ　今　全然手に入らなくてネットでプレミアついて２０万くらいするんだよ。

花江:　 知り合いから転売してもらったんだよね。30万で。

I found on dictionaries that プレミアついて means at a premium, at a higher price. What I don't understand is: 20万 is the final price or the amount to add to the original price? Thank you for your help!

Answer 1

Parse it as:

それ、...［プレミア（が）ついて］２０万くらいするんだよ。

"lit. It... [with a premium added,] costs around 200,000 yen."
→ "It... costs about 200,000 yen [at a premium]."

So 20万 is the final price.