Hmm. Change of plans in order

The PVC pipe ain't cheap.  May change the plan to 10 ft. rebar, 1/2" in diameter.

Look at this:

Ten pieces of rebar is a little over 50 bucks including tax.  About 60 bucks for the pvc and fittings if you exclude the pieces substituted with rebar.  That's 110 bucks total.  Still not really cheap, but could do the job.