Hmm, they’re not too bad...to me it looks like when she made the mould that the base plate was put on upside down and she has jus rolled with it, maybe didn’t even notice the mistake till you pointed it out.
They are not accurate, but you said you’re not too fussed on accuracy, so an easier fix is possible that the one you suggested. ( though maybe something you may not need to do it the vendor takes responsibility and offers and exchange for the correct ones they advertised or refund, full or partial.