A really good profesional grade guitar is usually between 2k-5k
A good condition vintage fender or Gibson is probably 5-50k depending on the model.
If you want a really good Strat, Tele, Les Paul, or ES-335 Pre CBS and or Pre-1964 for Gibson it’s probably 50k to 250k and maybe more for a really mint one.
But it’s also fun to play the bullshit 50 dollar pawnshop guitars that literally can’t stay in tune.