yes. go to reptilefood.com and see their contact number. They are in CA so consider time change (if needed) and they don't open until 10:00 a.m.
Just a thought on quantity...how much does Diesel eat? If he eats regularly then 250 should be good. If you offer other feeders you may want to begin with 100. And/or get two different sizes - like 100 of 3 week old and 100 of adult (or whatever works for you).
Frankly, if you are going with 250 all the same size I would recommend reptilefood.com for their prompt shipping and customer service...just my musings 
Oh, tank set up. I usualy do 100/10 gallon tank. try the plastic canvas setup to help keep the poop out of food and them. clean and remove any dead ones immedaiately - they stink!
lele
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0.1 veiled - Luna
0.2 felines - Kyndra and Líta
1.0 African Clawed Frog - Skipper
0.5 Mad. Hissers
0.1 Chilean Rose Hair Tarantula (no name yet)
?.? Goliath Bird-Eater Tarantula (no name yet)