The problem is we are so used to zappos.com, amazon.com, bestbuy.com etc.... were we recieve a tracking number within hours and its here within 5 days or less. But ya, honestly how long does it take to ship some springs unless they need to make a batch of them. Let us know how long it takes, sometime places say 4-6 weeks so your warned. Image if they said 1 week, but it took 2? Would you be more pissed.
As a business person though, really 8 weeks, 6 weeks? Just take it off the shelf and ship it by the next day....unless it is custom should be some inventory.