The boxes would be at £350/- for the pair as mentioned.
The delivery for the two on UPS Economy (which is 3+ days after delivery pickup, and please also consider time for your country's custom time process), will be at £35/- to Belgium. The total will be at £385/- for this delivery.
If it's fast delivery, unfortunately it's twice more via UPS Express, which was quoted nearly £85/- by them (2 to 3 days).
Via this delivery it would be at £350+£85= £435/-.
Please do inform me which delivery method would be preferred, or another company courier
The boxes will be wrapped snugly in layers of bubble wraps and boxed with silica gels inside.
For reference on me, my UK's eBay member is arstudioworks, which is in good standing and my regular stuff and junk purchases from the site. And also from another CDag's senior member, Brenton West (drdag), could vouch me.
Please do email me at: photoformulary (at) gmail.com if more info needed, plus I am not sure how to access member's email via the CDags's forum.