Pricing/subscription:

thinglink $300
Sketchfab   https://sketchfab.com/plans  $79 monthly $80 x 12 = ~$900
CoSpaces https://www.cospaces.io/edu/pricing.html $74.99 per year https://www.cospaces.io/edu/pricing.html
Qlone ($29.99)

ready-to-go resources for merge cube:

apps for merge cube:

https://www.arvreduhub.com/merge

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Merge cube, the basics”

to create merge cube content in Cospaces.edu, an paid add-on is needed.

Scan object with Qlone, upload as OBJ file ($29.99) and merge cube it with the object uploader app:

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More on Merge Cube in this IMS blog
https://blog.stcloudstate.edu/ims?s=mergecube