While it is a matter of taste there is a whole lot of glamour options in game that made me go "Wow, that looks really nice! Lets see where its from..." - and then the item in question turned out to be something that I can, in theory, earn in game but is hard locked behind something like Savage (often old Savage content that no one actually does anymore but thats still not so faceroll easy that I could solo-farm it or clear it with clueless people) or a huge amount of PvP (I really LOVE that Filed Commanders Coat and I think I "only" need about 16 more Seal Rock wins for it? But getting those and getting the 84 wins I have so far took an aweful long time - and anyone who isnt into PvP who might see this coat could very well just thinkin "Jep, not gonna bother") or any other type of content - Eureka comes to mind, for example - that could very well like more of a "wall" to a lot of people than paying for the item on the mogstation.
My point basically is: There is a lot of glamour-options in game and they're actually by no means of lesser quality than what we got on the mogstation. And a lot of the nice ingame items are even more hardlocked than a mogstation outfit to most people - I dont want to come off as insensitive to people with a lower income who might struggle to pay for these things (with money that apparently helps fund the game directly, instead of going into the general SE-budget like our sub-money and therefor helps the development of the game while also keeping our sub-cost at the level they are), but the fact is that a lot of nice looking gear is locked behind some kind of wall - skill, time, "luck" (when it comes to frontline PvP it feels more like that...) and yes, money aswell.
There are a tone of glamour options that are fairly easy available - 95% of my personal glamours are build using those easy options and I run into people wearing intresting looking pieces of gear that are genderlocked or job-locked or sometimes even race-locked more often than I run into people wearing something from the mogstation that makes me go "Wow, there is no way I can create a similar looking and equally beautiful glamour without paying for this outfit on the mogstation!"
At the end of the day its obviously a matter of taste when it comes to what you think looks "beautiful" - but I cant say that I see a better or higher quality from the mogstation items than the ingame ones. They still have terrible clipping (in case of the things that came over from the korean/chinese version the clipping is often even worse) and crappy textures.