The most expensive guitar I bought was $2800.00
But I bartered one for $5500.00.
I believe my acoustic was ~700USD.
I like to buy cheap guitars and fix 'em up. I find it fun! I typically buy 500-600USD guitars. I am not against spending upwards of 1500USD if I really like something and can afford it at the time.
Customs are another story, but I don't have any of those and I don't really lust for them.