Generally, Jimi Hendrix-era Fender Stratocasters can sell for anywhere from $20,000 to over $100,000. Some particularly rare models, such as the 1968 Olympic White Stratocaster that Hendrix played at Woodstock, can fetch even higher prices.
Jimi Hendrix-era Fender Telecasters typically sell for less than Stratocasters, but can still fetch high prices. A 1954 Fender Telecaster that Hendrix used during his early years sold for $344,500 at auction in 2019.
Gibson SGs and Les Pauls used by Hendrix typically sell for lower prices than Fender Stratocasters and Telecasters. A 1967 Gibson SG Special that Hendrix used can sell for around $85,000, while a 1969 Gibson Les Paul Custom that Hendrix once owned sold for $584,750 at auction in 2015.
It's also worth noting that replicas and guitars similar to the ones used by Hendrix are available, and these can sell for much lower prices than the actual historical guitars.