Hand loaded -vs- commercial bullets

[Edubya]

I am trying to rationalize buying a Dillon Reloading Machine RL 550B $775.00 progressive reloading setup as shown at the following site:
http://www.dillonprecision.com/#/con...atid/1/RL_550B
Box of 100 130 gr. WWB .38 costs; $29.46 + $1.99 tax= $31.45
A much better self defense bullet, admittedly, must be loaded into a casing with primers and powder but those are not too expensive either...
SPEER 38 (.357) 158gr JHP BULLET VALUE PACK 450/bx
Item Number: SP4732
Price: $65.99 (X2=$132 for 900 bullets)
A pound (7000 gr.) of powder can load over 1000 bullets and an 1000 primers will cost $30. or less. You might have to buy a thousand or so shells, $120.00, to get started good, they will normally last for ten reloads.

132. for bullets
120. new brass (once fired brass can be found at ranges or bought for less than $10.00 per 100)
60. for powder and primers
$312.00 for the first 1000 and thereafter about $180.00 for top quality primed and ready bullets verses $295.00 for Wal-Mart quality target range stuff!

Ten times less money is the way I figure it, plus knowing that you have quality bullets always ready. There are lower quality bullets, but why go there at these prices, available at the below site:
Graf & Sons - 38 Caliber (.357 - .35

An equivalent "commercial self defense" round (of the above described hand loaded round) would cost $480.00 per 1000
http://ammunitiontogo.com/catalog1/p...oducts_id=2150

Have I missed anything in my facts a figures?