Selling Multiple Items at once

Hello,

Id try to get the greatest hits pack by selling everything but it takes to long, it would be cool if you could sell multiple items at once and be able to choose how many.
There was a cool chrome extension that let you do that but its gone now, so it gets annoying trying to sell stuff. If you could add something like this to the next update or fix that would be pretty helpful.

There is a chrome extension for selling REQ here.

thank you i couldn’t find one