Luana:
You're lucky. I get mine from Ralphs Pharmacy and THEY want to charge me $23 for 90 5 mg tabs. Perhaps your Ralphs Pharmacy ignores the State's rule. I'm 'stuck' getting 10 mg and breaking them in half. (Of course, this way it's HALF of what you're paying for your generic 5 mg, so I'm not complaining.)
I take 49/week - I've been consistently at this dose for quite a while. I get 7 mg/day by breaking a 10 mg in half, and a 4 mg in half -- so it's still costing me $10 for 90 days. If I was able to get a 5 mg for $10 for 90 and a 2 mg at the same cost, my daily cost would be twice what it costs me now. (Still going from about a dime a day to twenty cents a day isn't a big deal). I could probably get to 49 by taking six 7.5 mg and a 4 mg, but the consistent 5+2 every day is a bit smoother and still comes out to two half-pills a day.
Ralph's is not the only place to get $4 generics. As for the "state rule" that sounds totally ridiculous. I've worked in insurance billing and the insurance industry for a long time. Medi-Cal has the lowest reimbursement amounts going. For example, if a pharmacy is billing Medi-Cal $23 for an Rx, they're probably getting reimbursed something like $2 or $3.
If it works out more economical for you the way you're doing it, great, but someone does not know what he/she is talking about.