If the shop says it should work, and/or they are willing to let you return it if it doesn't, it's riskless to try.
If they don't know and they are not willing to let you return it, I would go and search another shop.
If they say no, I wouldn't buy it.
I have samsung smart tv (40F5500). I wanted to know if I can use any other webcam other than VG-STC2000 and VG-STC3000.
Camera cost me around 100$ (Indian price 6000) which is really costly.
There are few logitec and HP(KQ246AA) skype camera available which are lot cheaper (20$), however before buying it I want to make sure it will work with the TV.
I just want to use webcam to video chat though skype.