>>264092742
Depends on the license of the base.
Vroid you can unironically just change the tint of the main textures or even just export a base with the proportions edited in the vroid editor and put it on booth or anywhere else with a $1 million dollar price tag and you're not going to get in trouble. 
If it was a base made by digitrex I would at least remap the UV's and bake brand new textures before trying to sell it. If you molded the base but the UV maps are exactly the same as the original base mesh it's a dead give away.