This is a video of Youtuber Vinheteiro playing six pianos at a variety of price points to determine if you can tell the difference in the quality of their sound (previously: his evolution of video game music). He starts with a very used $500 Baldwin, and ends with a $2,500,000 Steinway & Sons 'Pictures At An Exhibition' (above). So -- could you tell the difference? I could not, but I'm also operating with two blown laptop speakers that regularly get soda spilled on them. Last night I Skyped my girlfriend before bed and she just sounded like popcorn popping.
Keep going for the video.
Thanks to John S, for reminding me of my dream to have a grand piano in the entrance hall to my never gonna happen mansion.