The thermo/hygo is replaceable, along with the fan, and wind cups. The instrument is very good with humidity and also temperature as long as the fan is working at full speed. Siting for wind is the most difficult in an area with lots of homes and trees. The model you link to does not connect to internet.
I would recommend a PC connect model so that you can upload to sites besides Wunderground, if you choose. Weather display is a good choice for software, or meteobridge router if you don't want to have the PC on all the time. If you like the station you linked to, buy it and add a PC connect console. You can have as many consoles as you like.