Some folks have preferences for working characteristics beyond fuming too.
Try Salt City Glass, they're pretty reasonable.
http://saltcityglass.com/
If you're not buying cases they sell in 19.5" lengths so they can be sent USPS.
edit: Sorry, I just looked and it doesn't look like they have 38. If you're just getting it to try though, you can always condense down some and blow it out.
Some places will charge you a lower cut fee to chop the tubing, but you can save a few bucks by getting it cut down so it can ship easier. Shippers are doing dimensional charging now in addition to weight, so smaller packages cost you less.