I used a Microswiss hot end, direct drive BMG clone and pancake stepper motor all off Amazon. A bit of experimenting with retraction and other settings in Cura and it prints great.

www.amazon.com/dp/B0993XWGXV/www.amazon.com/dp/B08KP189KN/ www.amazon.com/dp/B07ZD144GG/

If you decide to do direct drive make sure to put a washer in the left hot end screw where it mounts to the strain gauge. Otherwise the nozzle will dig into the print bed.

I reside in the US but have found great heaters and thermistors/thermocouples on 3dprintingcanada.com (shipping isn't terrible)

Otherwise my current setup (Hercules mod) is mostly from Amazon:

BIQU Dragonfly Hotend https://www.amazon.com/dp/B08M94C4XG

BMGv2 Extruder (TriangleLabs) https://www.amazon.com/dp/B08KP189KN

Winsinn 50W heater cartridge https://www.amazon.com/dp/B07MP7XLTC

Polis3D T-K500 thermocouple https://www.amazon.com/dp/B08F33WDDM

https://www.amazon.com/gp/aw/d/B08KP189KN?psc=1&ref=ppx_pop_mob_b_asin_title

This is the extruder I bought, it included part of the mount already