u/Bospo_o

Hello guys as stated in the title, i am going to make a mini led screen that will display your card and its current est value(basically kinda like a stock exchange app?). So was wondering which website/app is the most reliable to compare prices with? i tried using price charting but its quite hard to get their data set and if i were to get my hands on them, it would be 50 usd per month and it is not something worth paying for because i am doing it as a hobby. would appreciate if you guys could recommend me some sites where i could get reliable data from and as of right now my current plan was to get my data from ebay but that would means super heavy filtering and cleaning of the data.