So i am bored (again) and i decided to make a script that refresh the shop continously, this could be very useful if you want to buy rare item very quickly
here is a script:

"""

let HowManyTimeToRefreshTab = 2000 // will refresh the tab 2000 times
let TimeToRefreshTab = 1000 // how many time it will wait to refresh again (its miliseconds so 1000 is 1 seconds)
function RefreshTab(i)
{ if (i<0) return;
setTimeout(function(){
searchMarket();
RefreshTab(i);},
TimeToRefreshTab);}

RefreshTab(HowManyTimeToRefreshTab)

"""

to use it go to the shop and go to either Featured tab or rare items tab then inspect element, go to console, paste the script and execute it.