I have purchased commercial skins that expect you to install the skins and containers individually.
From how you are describing it, it's basically a preview of the skins that you purchased in the zip file, then the skin and container files separate.
You will be reuired to install separately based on what you have described here.
The reason you can't see the skin is because it's a folder in a folder structure which is incorrect for parsing skins.
Even my free skins are packaged as a single install to ensure that people who don't know about skinning and just install everything as they see it, get the desired result, OR I name the zip file with UNZIP_ME so people know to unzip that..(well you would think they would)
So, yes you're expectation from reputable skinners that they should package into one full skin package is not unusual, but not all do it. It's not a matter of right or wrong, but how they prefer to package them.
Nina Meiers
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Nina Meiers My Little Website
If it's on DNN, I fix, build, deploy, support,skin, host, design, consult, implement, integrate and done since 2003.
Who am I? Just a city chic, having a crack at organic berry farming.. and creating awesome websites.