First build, are these parts worth it?

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Ok on a serious note from a building at the end of 2020 / start of 2021 perspective when we are looking at extruders we should be looking for gear reduction a precise guided path for the filament to follow that doesnt allow it to wad up or push out anywhere, and Dual Drive. Even E3D's new Hemera has dual drive. We finally learned that it is better if we grab the filament from both sides. The genuine BondTech BMG extruder comes with an $80 price tag. It is a nice extruder and worth the money but there are a lot of cheap knockoffs that would serve you so much better than what is in your link. Here is one for under $20: Bmg extruder clone dual drive upgrade bowden extruder kit for 1.75mm filament 3d printer parts ender-3 / cr-10s pro Sale - Banggood.com