If you'd like, I can pick one up at MEC here in Canada and send it to you at cost via parcel post (cheapest method). I did the same kind of thing for another member in the U.K. late last year for a pair of MEC booties that would have cost $50 to ship otherwise (ended up costing about $25). Let me know and I'll check what the cost of shipping would be for the specific hammock weight + box. I think they only have the Expedition and UltraLite, both with bottom entry.
I can't buy something without first considering whether I could just make it myself instead. How'd I get so screwed up?