I found travelling fairly pricey to be honest when I was in Australia
I came back around £6 K in debt ( I purchased my first house a few years later for £27 K )
I was working full time in Sydney and still managed to run up a massive debt
I might have been living slightly beyond my means at times ( to my defence my PADI Dive courses and Dive equipment cost a fair bit, in hindsight getting to and passing my Dive instructor course was a little waste, to my defence I was planning on teaching Diving in Thailand ) oh and out partying every night of the week might have been a little OTT