Short story: All purchases are for personal use only. You can 3d-print as many copies of the product as you like, but you cannot resell the .stl files or any physical prints of the .stls.
Long story: For all intents and purposes, the products sold on this platform are sold under the same licence terms as those used by MyMiniFactory (another site on which Sharedog Miniature products are sold).
I.E:
"Digital files sold through the digital file store have a strict non-commercial, personal use only license. You shall not share, sub-license, sell, rent, host, transfer, or distribute in any way the digital or 3D printed versions of this object, nor any other derivative work of this object in its digital or physical format (including - but not limited to - remixes of this object, and hosting on other digital platforms). The objects may not be used in any way whatsoever in which you charge money, collect fees, or receive any form of remuneration. The Standard Digital File Store License overrides any other licensing option on this page (in particular: no remixing and no commercial use allowed)".