Question about pharma retailer

I don’t know if it is just me, but it seems to me that a pharma retailer business is much less profitable than other retailers. No matter what i do i can’t seem to sell more than ~2500 units a day GT. Even if i lower the price to the point where i barely make any profit per unit. Within a day RT of opening a new phone retailer i surpassed the profit of my pharma retailer that has been active for much longer. Even 40/40 pharma changes nothing in terms of sales or retail price.

Is this intended or is there something abnormal going on?

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