Messaged the owner twice with the original quote attached to the message via Trip Advisor.
Upon confirming the size of our party (2 adults and 3 excited children) and placing deposit, the quote quite suddenly jumped to 3 times the price originally given.
While I appreciate that computer errors can occur, an apology would not go amiss.
The chalet was really lovely and in such a beautiful location. We had a great week with sunny weather. It is small but has everything you need.