Poor quality vector stock

I just paid and downloaded a vector map of Scotland. It was not possible to tell from the pixellated preview, how good the quality of the country outline was. But of course, when it was downloaded it was terrible.

I will be very reluctant to use Adobe stock in future for vector images as it is just not possible to tell how good they are. In this case I can do a better job by tracing a scan off my phone.

The map was only one credit, but it is totally unusable so I think I am justified in asking for a refund. 

But moving forward, without a way of being able to see the vector outline of a vector image before purchasing it, you cannot see what you are buying. We need a vector preview feature ... even if it is in the browser.