A few years ago I was looking into this as well, but in the Philippines -- there were a ton of amazingly beautiful and affordable islands in the Palawan region... the problem was getting stuff/services onto the island.
Getting power, water, sewer made the cost extremely high. Even with Solar/Septic - getting equipment and suplpies was just far too much for me to undertake and afford.
So CONGRATS on succeeding. How much for an 11th person share in the Island?
Have you setup an "infrastructure" fund where all ten of you contribute a monthly amount - and then spend it annually on one big buy for the Island?
I'd recommend you see about purchasing used shipping containers and having them barged over to the island: this will let you store stuff - and if you're crafty enough, there are tons of examples of building housing from them online.
Start planting seeds of edible plants all over the island.
There were islands in Palawan fro sale at the time that were uttery perfect for ~$35,000 USD - large enough for a house, had a really nice beach etc...
The problem was that in the northern part of Palawan, you either need to ship from Manilla, or fly stuff in.
The islands were too small/rocky to be able to have a well, so water was an issue - as was power - you'd need to basically have solar/wind/generator (which meant boating in fuel regularly).
So - I don't have exact numbers - but it made buying an Island for ~35K really mean that you'd need ~$250K+ to really accomplish something.
Also, buying an island in a 3rd world country is an entirely different proposition from doing it in a place like Canada. For example, keeping your stuff safe becomes a major concern, especially if you're planning to only visit every now and then; you pretty much need to hire a permanent caretaker.
Also, in the Phils (and most all Asian countries) foreigners can't buy land directly, so you need to use various workarounds of dubious legality like setting up a corporation with a local citizen as director and an undated, presigned letter of resignation, etc.
And you're still screwed if somebody in power doesn't like what you're doing. There was a bizarre case a while back with some Finnish guys setting up camp on a remote Indonesian island (with go-ahead from the locals, mind you) that eventually ended up with the army showing up to kick them out with lots of chest-thumping about Indonesian sovereignty, but my Google-fu is failing me right now...
Getting power, water, sewer made the cost extremely high. Even with Solar/Septic - getting equipment and suplpies was just far too much for me to undertake and afford.
So CONGRATS on succeeding. How much for an 11th person share in the Island?
Have you setup an "infrastructure" fund where all ten of you contribute a monthly amount - and then spend it annually on one big buy for the Island?
I'd recommend you see about purchasing used shipping containers and having them barged over to the island: this will let you store stuff - and if you're crafty enough, there are tons of examples of building housing from them online.
Start planting seeds of edible plants all over the island.
Digging a well might prove to be a bit costly...