Homemade Laundry Detergent

Laundry detergent has to be one of the most difficult expenses for me.  I hardly ever can find any deals on it, because not many coupons are put out.  And the coupons that are put out are miniscule amounts off at best - I mean really tide - .50 cents off of a bottle?  So after much searching of pinterest + google I found the following recipe:

1 Box of Borax 4lbs 12oz
1 Box of Super washing soda 4lbs
1 Box pure baking soda
3 Bars Fels-Naptha 5.5 oz
1 Oxy clean container 1.3Lb
2 Containers of downy unstoppables

I used my food processor to grate and grind the fels-naptha bars and the downy unstoppables.
Then I mixed all the ingredients together in a tote and this is what it looks like.

Now I am completely skeptical as to if this concoction will work or not.  But the recipe touted a total load yield of 504 loads! Because you are only supposed to used 1-2 Tablespoons per load. (I am using my oxy clean scoop!) I figured I would give it a go because it is cheaper than buying my normal Purex detergent.

Here is the cost breakdown:
Borax - 3.38
Super washing soda - 3.24
Pure baking soda - 2.24
Fels-Naptha - 0.97  X3 = 2.91
Oxy clean - 3.86
Downy unstoppables 6.97 X2 = 13.94
Grand total:  29.57

Now I usually buy 100 load purex bottles for 7.97.  Five bottles to get to 500 loads is 39.85.
So really not saving all that much, BUT, I NEVER get 100 loads from those purex bottles!  And if I use the correct amount of the homemade stuff, it should last me for 504 loads!  I also next time will probably omit the downy unstoppables.  It was kinda expensive, and of course I didn't have any coupons for it! So omitting the unstoppables brings the total to 15.63.  That is a savings of almost $25!  So I really hope this stuff works for me!  It is definitely cheaper!