check craigslist for used benders:
http://dayton.craigslist.org/tls/1541564034.html
http://dayton.craigslist.org/tls/1558216196.html
both are nice benders
wherever is closest to you is probable cheapest for tube. as most are pretty similar in price, but after adding 1/2 hr+ each way to the drive in a truck the cost can go up some.