As you may know, sales of physical items from one EU state to another between VAT registered businesses is tax free. In order for this be be accomplished the purchaser provides the seller with their VAT number, which the seller checks with VIES. Once confirmed, the purchaser can order and pay net of VAT. (It is the purchaser’s responsibility to declare the purchase and pay the VAT within their country.)
I am in the process of having a developer look at adding this functionality to the site to automate the process. However until then, any European VAT registered customers should email me with their business details and VAT number, and their order. I’ll confirm eligibility with VIES and send an invoice, net of VAT.