Remember those concert ticket stubs and posters you misplaced some time after college? Well, they’re worth money now as cultural artifacts. These days, collecting rock memorabilia may be akin to building a fine art collection that appreciates in value – the market for it is strong and here to stay, according to a recent New York Times article. If you think you might have something of value, the Rock and Roll Trust offers appraisal and authentication services that can be used for legal, insurance, estate and tax purposes. If you want to start collecting, this historically significant note written to a fan by Brian Jones after the Rolling Stones appeared on The Ed Sullivan Show is so expensive that you have to e-mail or call American Royal Arts to get the price. Take a look at these framed concert posters for shows at the legendary Fillmore West from 1966 to 1971, such as the Jefferson Airplane and Grateful Dead poster (pictured). Again, if you have to ask how much, you can’t afford them. If you want something that has at least a range of prices, check out Wolfgang’s Vault, a go-to place for it all, where you will find photos of John Lennon before the last concert in San Francisco, Jimi Hendrix at the 1967 Monterey Pop Festival, or the youthful and cocky Bob Dylan ($1,400 to $5,000). For $535, you can nab this 1978 Bruce concert poster, and for just under $26, you can get this Springsteen Amnesty International backstage pass suitable for framing. Once you register at Wolfgang’s, you can go the Concert Vault and listen to the Who play at the Fillmore East in 1968 and Springsteen playing at Max’s Kansas City in 1973 for free. At the Rock and Roll Emporium, you’ll find Jim Morrison’s autographed 1969 laundry ticket ($6,000), a guitar autographed by Brian Wilson ($1,200) and this autographed Nirvana album ($5,500). Always wanted a pristine copy of Introducing the Beatles (on vinyl!)? The opening bid at eRock Auctions is $2,500. Now, don’t you wish you hadn’t thrown out that KISS lunch box?