Have a look at our roundup of usable (and affordable) convertibles from the 1980s and 1990s for inspiration (classics.honestjohn.co.uk/top-10s/top-10-1980s90s-...s). If you'd like to use your car all year round, Citroen XMs (launched at the end of 1980s) are good value or you could go for a Peugeot 205 convertible (but watch for rust). There are few guidelines to follow when buying a car of this era. Although most were well rustproofed, the tinworm can still strike - especially if a car's been damaged in an accident. You'll also want to make sure that it's been well looked after so history is a must. Finally, try and find one that's been used - it's all well and good finding a timewarp low-mileage model but modern classics like these suffer from lack of use and their more complex mechanical components such as fuel injection can suffer, which will cause running and reliability issues. Go for something quirky and French and you'll come in well under budget - unless you go for a popular high-value model like a Citroen 2CV, Talbot Matra Rancho, Renault 5 Turbo, or Peugeot 205 GTi. You'll also enjoy the support of a great bunch of petrolheads via the club scene.