so, your saying if the shirt is black, then print the background black, and the design say white, or what ever color the design is????well i would suggest that you go for heat transfer... have the background colour match the tee colour so that ways you will not need to cut anything... well it may look a little untidy because of this...but guess wat its only 10pcs and 12$. If the client wants good quality screen print is the only solution.
IMHO if you own a cutter and heat press I don't think there is a process that would be cheaper to produce than solid color heat press vinyl, that said if you were doing lets say 100 shirts both sides (200 prints) then I'm sure screen printing would be right there as far as the cost per shirt, as with most any process the more pieces you have to do the cost per unit should come down, the problem with heat press vinyl is the labor involved in doing that quantity (100 shirts), a screen printer with a auto press could crank them out in less than a hour once set up at a cost per shirt that would be very very close to vinyl, while cutting the vinyl, weeding, and pressing 100 shirts would take hours and hours.Could someone give an educated guess as to just how many shirts does it take to where the cost of printing becomes less expensive than pressing vinyl? In other words is the cost of pressing vinyl less than printing six shirts, or twelve? At what point can presssing vinyl no longer compete with printing? Thanks