There is no universal "badness" factor to any delinquent debt reported on a credit report and nobody knows the precise effect it would have on any credit score because there are so many credit scoring models in existence and most of them are proprietary formats that are kept secret from as many people as possible (ie. company insiders only will know the specifics or people with the time/patience to reverse-engineer the models, which has been done in the past but is quickly rendered dated as the models are changed, corrected, updated, improved and generally modified fairly regularly).
The negativity factor of any item reported on your credit is wholly dependent upon how other creditors who use those reports for determining creditworthiness will choose to hold it against you.
Some creditors will look at it and think "Eh, it's a very small amount so he probably just forgot about it or he moved away and doesn't know it's even there. No big deal." while other creditors will look at it and think "Wow, this guy can't even repay $50. And he thinks we're going to approve him for a $1200 computer? Idiot."
Nobody can tell you which experiences you're going to have because nobody knows who will be making future credit decisions based on your credit report. There's a possibility that it doesn't even get reported to any credit bureau (do they generally report your account on a monthly basis? if so, it's almost guaranteed to be reported. if not, it's actually illegal for them to report it on the trade line in many jurisdictions). The trade line is what stays there for the longer period (varies by location, usually about 6 years) but there is a separate section for collection items that it might still get reported in, although these are generally removed after about 3 years.