jamesyb0i appeared to have some trouble with shipto.com forms (notarised?) that went away and he hasn't said why / how that happened....but cautious me didn't want to fall into any such potential holes, so I didn't do a shipito purchase.
myusabox.com are based in New York, so this may avoid the California sales tax "issue".
Have a look and see what you think. I may try this one.