Recently Black Book, analyzed various affordable cars once purchased modestly at MSRP that have significantly risen in value and have become great collectibles.

"What makes a car a collectible over time includes any number of factors that include popularity, pop culture, and production volume," Black Book's specialty products director Eric Lawrence said in a news release. "Many people think today's uber-expensive vehicles always came with a hefty price tag, but these vehicles show that's clearly not the case."

The 1971 Plymouth Barracuda — which tops Black Book‘s list of collectables— was once purchased at an asking price of $4,296.

Today it’s valued at $2.5 million, according to the company.

The four-and-a-half-decade-old vehicle has seen a 58,000-percent increase in value over time.

Just behind the Barracuda is the 1967 Shelby Cobra.

It was once bought for $7,500 and has a present day value of $1.3 million, a 17,000-percent increase.

Other popular models Black Book named are the Cadillac Eldorado, Chevrolet Corvette, Pontiac Bonneville, Ford Thunderbird and Ford Mustang GT.

The following is the list Black Book compiled, along with each vehicles' current estimated value.

1971 Plymouth Barracuda: $2,500,000

1967 Shelby Cobra: $1,300,000

1971 Pontiac GTO: $225,000

1948 Chrysler New Yorker: $140,000

1965 Porsche 911: $250,000

1959 Cadillac Eldorado: $270,000

1967 Chevrolet Corvette: $165,000

1968 Dodge Charger R/Tc: $135,000

1957 Pontiac Bonneville: $175,000

1969 Chevrolet Camaro: $95,000

1957 Ford Thunderbird: $85,000

1965 Ford  Mustang GT: $68,500