I noticed Expedia starts by showing me fairly high prices, then if I continue searching by changing dates after so many searches it gives me a price break, but if I don't grab that immediately, jacks up the price again; often giving the higher price right as you're checking out (in one case, higher by $678) extremely annoying and dishonest. However, all of the travel sites seem to be owned by them and even the hotels - I booked a hotel through Venere but when I got there the receptionist told me it shows as Expedia on her side. Also, it's worth checking the price with the hotel directly as it may be lower, and checking it again a few days before arrival in case it dropped.
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