Replying to I want new skis!

Ok so the thing is.. Last year late in the season i got new skis after breaking my others and skis here in Norway cost a lot but I found a site (www.getboards.com) Which is pretty cheap, atleast for Norwegians and im going to America soon so I can order it without taxes or shipping :D But I need to convince my parents that I need these wich coulde be hard. The skis i have now haveve become too short, the bases are fucked (I guess that could be fixed) and they are way too light to be pulling anything cool on jumps without losing control. Please give me some good arguments!