I've thought of selling them myself, but durian seeds are a real pain in the _____.
1) viability is very short, and must be kept moist
2) they start sprouting very fast
3) sprout is very delicate and breaks easily
4) hard to clean
5) smell can be strong and picked up by ag dogs at airports
6) fruits are very expensive to buy
7) good cultivars often have all aborted seeds, or very very few seeds
All that combined makes it very hard for most vendors, unless they happen to own a durian farm. Maybe when my durians start to kick into production it will be plausible?
BTW i really doubt seeds from Ecuador would last trip to Europe. You would be better off trying to get seeds from Thai, Malaysian, or Indonesian eBay vendors.