I think its unlikely that you will find anything reliable about how to make a marketplace yourself on Reddit, but there's no harm in asking around.

I agree that BitWasp is not production ready, as it says clearly on the Github page I share a link to (I presume that's what you mean by the website?), but I'm pretty sure its the closest thing there is right now to an 'off the shelf' script for setting up your own market. Also its under active development so at some point in the future it should be ok to use, but you're right that as the intro on GitHub says its far from ready for general release so unless you really know what you are doing its not a good idea to set up a marketplace using it right now.

I can assure you that the links aren't phishing attempts on my part, I have tested the market and had no problems - of course that's no guarantee for the future. I run Cryptorials.io which regularly publishes popular articles on deep web related topics and, for example, is #1 in Google for 'how to buy things on the deep web' and the first page for 'dark markets' and 'how to sell drugs online'. You are right that they don't have a lot of vendors though, because as I said when I shared the links it has only been set up quite recently after the owners took over development of bitwasp, which was I understand from a deepdotweb article was previously released and used by a number of marketplaces but had problems due to newbies setting up sites without knowing what they were doing and getting themselves in trouble.

EDIT: It is safer to use established sites like Abraxas though. I shared the links mainly because of the relationship to BitWasp.