You pay a premium for a coin. I just looked at the price for the coin you list on Ebay and at Coinabul. The premium I see is about $50, not $200. The premium is reasonable to me because they are a vendor who delivers and I am risk averse. My primary complaint is that they do not ship as advertised and are slow to respond to inquiries. My suggestion to them would be to ship as advertised, cut their product list to their top items, and maintain some inventory. My guess is that their volume doesn't support better pricing and that they do not maintain an inventory.
My primary complaint is that they are NOT a vendor who delivers. I ordered 4 silver eagles from them and paid the agreed upon price, even with their hefty premium. A week later, I received an email that, due to technical difficulties, they could not cash out of the BTC in time and they lost value, so they were "offering" to send me 3 silver eagles instead. They charged me in BTC, I paid in BTC. The fact that they did not convert to USD at a good time is not my problem. Any reputable company would honor their sale, but not Coinabul.
For a risk averse person, you are taking a huge one dealing with Coinabul. Read the other forums, there are many people that have had the same, or worse experiences with them.
Coincrunch