Actually, the $25 on the EOD is a minimum amount of discount rate billings (on VISA/MC), as Reddrake mentioned above.
Thus, it is $20 + $25 = $45/month minimum cost from EOD or MA/EOD.
It is not $25 in minimum sales but rather $25 in minimum fees that is collected on a monthly basis.
So if you process over $1,162 in VISA/MC sales per month this won't matter a great deal, but if you think you will be having any months under $1,162 in VISA/MC, then the monthly minimum will definitely apply on that program.
For more details on that program, there are a few other threads here on WHT that have more info and user feedback, etc.