[andreasklinger]

Centralized marketplaces / price comparison services / middle men etc exist and do a good job

But very often they can't do the optimal prices or all the inventory - eg stock not listed on nasdaq - so it comes down to "are you able to move quickly/cheaply" (and/or is the inventory able to move quickly/cheaply)

[fastdev]

> But very often they can't do the optimal prices

Are there any reasons why a centralized marketplace are worth in price discovery?

> eg stock not listed on nasdaq

I guess if a stock is not listed on Nasdaq it either listed somewhere else or there are some (probably reasonable) legal restrictions that prevent it from being listed.