For me it's Amazon, Etsy, Next and Fat Face. Amazon and Etsy are filled with so much poor quality crap, stuff that bends or breaks after a few uses or electrical items without certifications and cosmetic and cleaning products without labels. I'm never sure if I'm buying 10 year old stock of a well-known brand, a fake or the real deal. Their pricing and "discounts" are wild too and so rarely are they as they appear. When it comes to Etsy it is swimming with mass-produced crap being resold by small businesses. Or should that be "small businesses". Handmade must be one of the most frequent mislabellings on that site. It's a shame because it used to have interesting products
Next is often way down my list of places to check when I'm searching for something as their prices have increased whilst their quality has dropped. They always had somewhat inconsistent sizing but now it's even worse. Boden and Fat Face are no longer high on my list of places to shop for the same reasons.
Which places have you moved on from?