I've always just used superior. The Bean Farm can be kinda spendy sometimes. I had an online invert business going for some time...although I used Superior Enterprises, I ordered plastic vials (for baby tarantula spiderlings. scorps, etc.) from Thornton Plastics ( http://thorntonplastics.com/ ). I doubt they'd be much of a use to herpers though. For styro lined boxes I usually make my own from the sheets of styro that you buy from Lowe's, Home Depot, etc. You can get alot thicker than normally used in boxes...plus you can line anysize of box. If you take your time, the boxes can still look very professional and not homemade/ghetto....
I tried my local restraunt supply house for deli cups, but they didn't carry them and didn't seem to want to do any special orders.... Places like Sams Club sells the tiny condiment cups (could be used as cheap/disposable water dishes for hatchlings)....
I doubt that helped... If your ever shipping inverts, Thornton Plastics is the place for those awesome clear plastic pill vials!