Yes, that's a decent price for something in the 24,000BTU range. Make sure there are those in your area who can work on the brand you get, however. I've purchase a/c units only to discover when they broke that no parts or expertise was available. Still with brands your maintenance people know!
There are a few refrigeration parts places that also sell split a/c's. Refriparts is one of them, and if I remember correctly, they sell TGM brand split A/C's. I think they are in Santiago too.
TGM A/C's are very simple, and parts are readily available for them in any A/C repuestos store.
I think you'll find that the TGM is the cheapest A/C you can buy.
I got a quote for a 10K super silent TGM split for 12K pesos last month.
In my opinion, TGM's are great, no frills A/C that will last forever, and have simple electronic cards that are easy to find/repair if and when they go bad due to power fluctuations.
I would go out of my way to find that brand when I buy one (probably next month.)