Anyone used this cheap "Archival Quality Ink" from homemediastore on ebay?

[unique_monkey]

Looking for some refillable carts and ink for my ix6550 and came across this ink which makes a bold claim "These inks are designed as non/minimal fade over 85 years and they will produce a wide colour gamut" all at only £24 for a 500ml set which seems rather cheap for quality ink no?

Has anyone used/heard of this ink before?

http://www.ebay.co.uk/itm/261299287457