Why should I buy from hollandarts.com?
Here is MY guarantee
face="Arial Narrow" size="5": "I guarantee the authenticity, age, and condition of everything that I sell. If you are unhappy for any reason, return the item in its original condition for a full refund, minus shipping costs. CLICK HERE for time limits and details"
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Here is Ebay's guarantee: "We are just a venue." Caveat Emptor!
Here is a large auction house's guarantee: 
"All lots are sold "AS IS" and neither we nor the consignor  will be responsible for the correctness of description, genuineness, authorship, attribution, provenance, period, culture, source, origin, condition or authenticity of any lot sold..."