Wanting a cheap version of a premium ball is a potential way to cause yourself a lot of trouble.
If he has already decided that the Trifecta is the perfect ball, why not wait a couple of weeks, save up the money and buy that ball??
Honestly, that is the proper course of action.
There's few choices for a ball that strong and cheap. I was going to suggest the RS-P and the DT Sniper but while they are strong dull particles, they are also pearls and they won't be as strong as the Trifecta.
Only 2 balls as cheap AND as strong come to mind: Brunswick Goliath and Ebonite BigTime; both are solid particle balls. But neither have the asymmetric core of the Trifecta. Brunswick's Strike Zone has a very strong solid resin (Activator) cover with an asymmetric core ; it is less expensive than the Trifecta but not by a lot.
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Bowling: Just like hand grenades and horse shoes, you only have to get close.
Life: Deal with what is.