Advice please - cheap android tab for Skype

Hi everybody,

I'm looking to buy a tablet for my in-laws, who are very technophobic. It's mainly for Skype video calls, but they might want to do basic web-browsing and email stuff too. I'm pretty tech-savvy in general, but I know nothing about Android at all so I was hoping you might be able to help. There are dozens of cheap tablets listed on eBay, along these lines:

Is something like this a viable option, or would I just be wasting my money? I don't want to spend hours troubleshooting over the phone, so I need something very basic but that won't be more trouble than it's worth. Any advice or opinions would be very welcome.