It shall be conclusively presumed by the court that a party purchasing the property liened upon within thirty days given herein to claimants wherein to file their liens, is not an innocent third party, nor that he or she has become a bona fide owner of the property liened upon, unless it shall appear that he or she has paid full value for the said property, and has seen that the purchase money of the said property has been applied to the payment of such bona fide claims as are entitled to liens upon the said property under the provisions of this chapter, according to the priorities herein established.