I've ordered multiple items from Devilinspired, and each came packaged neatly and as-described. The shipping was unexpectedly fast, and you end up paying much less than other Taobao resellers/ third party sites. Their customer service has always been considerate and helpful!
I think it is important to mention, that these items come from Asia. Asian sizing standards are very different from Europe and North/South America. Errors in sizing are often the consumer's fault of being ill-informed on the product they intend to purchase. When I purchased a blouse from Souffle Song, I made sure to take my measurements and compare them to the given sizing chart. The blouse fits me perfectly.
Another thing to consider, is that these are mostly Taobao brands. They're not Japanese Brand (ie: Angelic Pretty, BTSSB, AATP, Moi Meme Moitie). Devilinspired are not the ones making the clothes. They're a third party. Some Taobao brands (from which you can purchase off of Devilinspired) are bound to sell some faulty products. Quality products usually aren't cheap- especially in lolita.
It's like shopping at Forever21. Sometimes you find quality items for a really cheap price, that'll last you for years. Sometimes, you find a pricey- but poorly made- item that'll fall apart in a few days. Read the reviews, check the sizing charts, look at the material content, and you should have a really pleasant experience shopping with them!
This site is amazing, and I absolutely love ordering from them.