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Three years later, the VIC-20 showed up as a cheaper alternative to the PET 2001. It was limited with 5KB of RAM (3.5KB useable) but it did have a 40-KB add-on memory cartridge. The VIC-20 did have a real keyboard and sold at retail stores (K-Mart) for $299.99. It also featured the first modem under $100.
The VIC-20 was the best-selling computer in 1982, with 800,000 units sold. It was quickly forgotten after the new and improved Commodore 64 was released in 1983.