Tbh i reckon now that you're a teenager try buying something for yourself that isnt really a toy. If u need new shoes buy them, growing out of shirts, buy more and if u dont need anything save it for something bigger that u might get down the line such as a gaming pc or something u'll use on the daily.
Lego imo is a waste....my little brothers get it and i build the large things for them and i agree its stimulating and quite enjoyable at the end to see what u created but that goes away in 5 mins and id never buy lego for myself.
Is it worth spending $200 on something that you will enjoy for a day and then just sit there afterwards?