Maybe it is best for your peace of mind and Customs duty fee fears, that you to never buy anything outside of Portugal for shipment to you in Portugal? Who knows? Nobvody can answer that but you.?
JetLasers means, there are always no Customs fees charged by JetLasers--just the price + shipping charges.
In the event there are Customs Duties it is your responsibility to pay any Duty which is no different than when your other lasers were shipped to you.
JetLasers says: "The recipient of an international shipment may be subject to such import taxes, customs duties and fees, which are levied once a shipment reaches the recipient's country. Additional charges for customs clearance must be fulfilled by the recipient; JETLASERS has no control over these charges, nor can JETLASERS predict what they may be. The recipient is the importer of record and must comply with all laws and regulations of the destination country. Orders shipped outside of China may be subject to import taxes, customs duties and fees levied by the destination country." JetLasers explains what they said in full detail on the web site.
Do you actually imagine anyone on an internet forum speaks for or can speak for Portugal Customs or any Countries Customs Agency or what they do or don't do, stop or don't stop or how often in the real world?
If you want to avoid any remote possibility of Portugal Customs having the potential of beng involved in any way, then never buy anything sent to an address in Portual from outside Portugal.
JetLasers ships via DHL shipping agent. DHL clears the package with Customs and delivers it to you.
.Any troubles are very remote possibility at best, if that means anything to you.