well for one non-oem isnt 600, it's more like 275 with free silvervision bulbs that dont show up
And yes it is a big deal when the build quality is notably shady and inconsistent.
1. the fronts are different sizes or the molds are messed up cause one fits better then the other + they used two different types of weather stripping which makes the left side look like a floppy piece of isht.
2. the sides are ok.... but only after I dide some bending and what not to the spring.
3. the rears...
... they fit awesome, but they too look like ass when the under molding is glued too far in around the plastic and it shows through since the shit is clear.
all in all take your 600 dollars you are saving and buy OEM, there are tons of bad reviews for these DEPO clears that i got.