You can find the hose quite cheaply online (in the 20-50$ Canadian range). It's effectively plug-and-play on the Dreamstation, as it detects the heated hose by itself according to the manual. Then, when the machine is running, you can simply change the temperature from 1-5 in the same way you can with the humidifier.
As the season changes here, I've gone quickly from somewhat resenting its mildly warm presence cutting through the AC to finding it very welcome with the forced air furnace. Setting it to a low temperature (1-2) seems to make the humidifier settings more effective (since it really just heats the water in the tank, I assume) by keeping the temperature consistent from tank to mask.
I have used a heated hose since before the CPAP companies even made them. I used the Aussie Heated hose with my M-Series, and paid nearly $100 for it in 2008. Worth every penny. When I bought a PRS1 60 series out of pocket, I paid $75 for the heated hose upgrade. Today, heated hoses cost under $40 and insurance actually pays. What a bonus! I have put my money where my mouth is when I say this accessory is essential gear. I even use a hose cover on mine...add a few bucks for comfort unless you enjoy plastic rubbing on your face.
I have used just a standard hose for over 25 years, and have had very few problems with condensation, but it has happened when sleeping in a very cool room. My solution that has always worked is just to pull the excess hose under the covers with me. Tuck it up against my bod, and it warms up quickly. One of the great things I like about CPAP is that if it is that cold, I can just pull the covers over my head, and really tuck in snuggly. and sleep like a log.