If you have ever thought of owning your own island, chances are you'd choose to live the dream in the Bahamas or seek to imitate Richard Branson by buying a secluded bolthole in the British Virgin Islands. A windswept isle off the coast of south Wales? Probably not.

But Sully Island, just 400 metres from the mainland, is up for sale at the bargain price of £95,000, and offers spectacular panoramic views over the Bristol channel, from the Severn Bridge in the east to the hills of Devon in the west, according to estate agent Cooke & Arkwright.

The 14.5 acre island may not offer permanent sunshine and idyllic waters, but it does offer "an abundance of species of birdlife and fauna", a rich history of skulduggery and is a highly regarded fishing spot.

"From Romans and Vikings to pirates and noblemen – all have used the island for their own purposes, foul or fair, and evidence of a burial mound and a hill fort, together with the timber skeleton of a wrecked vessel are visible on or around the island today," the agent says.

There is currently no planning permission to build on the island, but it is reputed that whoever owns it retains the right to commission their very own postage stamps. Also, before the first world war the son of the Marquis of Bute successfully cultivated a vineyard on the island to supply his father's bottling plant in Castell Coch.

There are no roads, and the island can only be accessed by foot at low tide, making it an expensive fishing spot. But considering the island was on the market for £1.25m only last year, it could well prove a snip for keen anglers and anyone who likes to be alone. Just remember to pack a tent and some food.