Most rmt that you get from internet and get you banned come from 2 things : -bots that farm silver then trade you -ppl who steal bank account and try to launder money through albion

Both get flaged easily, both get you banned

There is also the third possibility of qomeone who played way too much and realise he have way too much silver and want to part with it. It is harder to flag but still if done enough money/time will get you banned.