aliexpress is a minefield but you can make like a sapper and navigate it easily enough.  proper sellers will demonstrate their goods and show internal components etc. then dig through the reviews.  i used to do well building counterfeit car diagnostic setups, using cracked dealer software and aliexpress bought heads and selling them preloaded on secondhand toughbooks to local mechanics.  the manufacturers all moved to online though, market shit the bed after 2014.
United Kingdom