Some users are using it, and I intend to make things better there too, don't get me wrong.
It is just that those sites you mentioned have already a number of users many orders of magnitude more than deckbox.
Even deckbox users that seem to like it here still do shop on tcgplayer and other places, and not here. I am not sure why... I suppose it also takes time for it to gain some footing...
Sebi i hope you dont get discouraged by all of this feedback. However i must say that you baffle me sometimes. This will be my 4th post on this issue with no reply from you at all. This is why I havent used deckbox to purchase cards. This answers your question above in my case. The marketplace isnt working for my needs.
https://deckbox.org/forum/viewtopic.php?id=24043
If you can fix the issues with the marketplace, i would gladly buy here instead of ebay and tcg like i have been doing.