False marketing

Fucking eBay with this shit. Everyone is selling X for $20. This one dude is selling "X" for $10. Click on it to find out seller is selling X for $20 like everyone else, but also selling Y, which is a semi-related item (maybe) for $10. But eBay sorts it all by the lowest item you have attached to your listing. It's obnoxious and clearly done on purpose by the seller, but eBay doesn't care, just like Amazon doesn't care their search and sort have been broken since forever, and now Walmart is fucked, too. Target has only begun allowing third party on their site and I'm just sick of this shit. Nothing we buy online, unless direct from the manufacturer, is apparently going to be guaranteed to be legit anymore. I only use Walmart.com to see what's in stock at my local stores these days. I assume Target will be similar soon, too.
First party shops are going to (or in some cases already have) ruin their reputations by continuing to allow shoddy crap from con artist third party sellers, but they don't care because they get their cut and have no liability for any of it. Something needs to change. At the very least, I should be able to permanently block third party sellers from my searches. Won't necessarily mean shit if the items are co-mingled, but at least then I can deal directly with the main corporate office rather than "WeGoFunTime Seller" or whatever bullshit word salad these fly by night shops use.