did you ever try both of the websites above? because it's my first time heard about that and if the both of the website is trusted i want to try to buy the VCC to verify something
I have used Coinsbee and I had a very pleasant experience. As for Paycent, here is the
announcement thread If you would like to read reviews or ask questions about it. I haven't tried them yet.
I wouldn't recommend coinbase.
The opinions are very mixed, but the general consensus is that if anything goes wrong when you use their services, there is generally a lack of support with their customer service.
Essentially, everything will work smoothly, or you can be waiting for weeks on end for a response from support. Not worth the risk, which is quite high especially with fiat payments.