Inform yourself about what this tool can do and what not (FAQ for example). Never completely trust any price checking tool. TradeMacro will be updated to always have the latest PoE-ItemInfo code, you don't have to run their script since it's included here.
(Before TradeMacro version 2.15.3 ctrl was used instead of alt as defaults). You can also open the items wiki page via alt+w or open the item search on poe.trade instead via alt+q. With TradeMacro, price checking is added via alt+d, alt+shift+d or alt+i. This builds on top of PoE-ItemInfo which provides very useful item information on ctrl+c. PoE TradeMacro is an Autohotkey (AHK) script that provides several convenient QoL features for Path of Exile Trading.