The research was conducted by Barnebys, an online auction house, and tracked sales from 2,000 auction houses. Pontus Silfverstolpe, the co-founder of Barnebys, told the Daily Mail: "Unlike many of their items today, Ikea's older products were actually made very well and have stood the test of time.”
The most expensive item found for sale was IKEA’s 'mushroom' or 'clam' chair produced in 1943.
A set of four Verner Panton Vilbert Chairs, 1993, are available for approximately $4,104.
In Australia, a quick eBay search found many vintage IKEA items for sale, including this JARPEN Vintage retro coffee table by Niels Gammelgaard for IKEA 1983 is selling for $700.
Basically, the older the piece of furniture, the more money you should be able to fetch.
To see more vintage IKEA items for sale on Barnebys, click here.