Limited edition prints are more collectable than what are called open editions where thousands of copies are prouced ie,Monets Water Lillies

They are more collectable if published by one of the UK's top publishers-there are less than 6 publishers in question

Quality of paper printed on makes a difference to the end quality

If the above is followed when the print sells out from the publisher it will usually increase in value

Sold out copies are found on the "secondary market" ie EBay has many or specialist dealers or a member of the public selling the odd item

Artist proof signed copies are worth more tahn standard limited edition

Prints on board may be worth more

Prints on canvas are definitely worth more

USA Copies. Washington Green publisher -sells their artists work in the USA -they have no less value than UK sold limited editions.