There's a lot of missing information that makes your question difficult to answer. I would suggest that many online real estate sites are rife with misinformation, typos, totally outdated information etc. For all we know it was listed for $75,000 many years ago. It could also be that it was listed for $175,000 and Homes.com's info was incorrect.
The real question is are you happy with your home and the price you paid for it, if so that's all that matters. I'm sure you got an appraisal done and it must have appraised at or above what you paid or you would not have been able to get a mortgage.
I hope you enjoy your new home and would encourage you not to let some unverified data on a website that doesn little more than scrape data from other sites to bother you.