Wow.
I have contacted the manufacturer of the part I ordered 'just to let them know' the kind of people they have selling their parts. I have never written a review before, funny this should be my first:
I spilled some tranny fluid on my box and requested advice on how to proceed with my master cylinder core return.

Four responses later there is still no evidence that the people hiding behind 'customer service representative' (that's right - noone will use their name!) even understand my situation. In the first response they say a soiled box will not be accepted and offer no advice. The forth response was simply:
"Please use the same box if you are returning a core."
Oh yeah, along with:
"Thank You for Shopping with Us!"

My advice- pay a few pennies extra and get your part elsewhere.

Partsgeek apparently make up those pennies by sticking it to their customers.

Ordered tail lights from them. One came broken, saw on their return policy that we have to file with UPS regarding broken parts. That was done and email was sent to them. No reply for more than a month. Their customer service # is a HOAX no one answers and then goes to the answering machine.
I have been trying to reach them for more than a month and still no reply. They have not even replied to the UPS claim yet.