To buy, or not to buy?

Like many, I am a big fan of Maison Martin Margeila, especially the shoes he designs.



These beauts are on sale in a price I can pay and they're in my size, but I wouldn't have very much money left over. Being a jobless teen, I don't have a renewable source of steady income I can rely on (besides birthday and x-mas). So I'd have to crawl my way up from the bottom again, letting other fabulous opportunities pass me by. Also, I love to wear skinny jeans over my ankle boots, and these don't look like they can fit over em. I'm fine with that, it's just I may not get 100% wear out of em because I have only 1 pair of straight leg jeans. So the question at hand is: to buy, or not to buy? Hmmmmm...