Looks like you just have not deal with bad traders on platforms. I once found on local aggregator product too cheap to be good (unfortunately at that moment only two stores sell these product).
I stored their number in my notebook and going to my shopping, calling them from bus stop, and they answered me some nonsense.
I made my shopping, and some walk, then opened platform and these shops already disappear. Less than hour.
In other case I managed to make order and paid from card, and also shop disappeared. - In a week I received SMS from bank "your payment returned to your account".
Sorry my post was sarcasm. If English is a second language I can see where that could be lost in translation. I don't expect any of these vendors, especially Amazon 3rd party, to check.
You are welcome! I just looking on these things very serious and trying to use my knowledge to make better products/services. And sometimes I'm really surprised in good way.
I stored their number in my notebook and going to my shopping, calling them from bus stop, and they answered me some nonsense.
I made my shopping, and some walk, then opened platform and these shops already disappear. Less than hour.
In other case I managed to make order and paid from card, and also shop disappeared. - In a week I received SMS from bank "your payment returned to your account".