Honestly... NO I don't think you can get setup any cheaper than that. I think that if you do order the start up kit you'll get the 6500Mah instead of the 6000Mah. That's what happened to me, I ordered the 6000Mah, and they said they were sold out and gave me the 6500MAH instead... and now I can't find the 6000Mah on the site any more.
Everything about Lipos is expensive, but once your invested they last a LONG time. I guess if you've got the money to spend (these are hard times for some people) then the Maxamps kit would be a good deal. Let us know what you decide to do.
J