I haven't made any repros for anyone other than myself in 3-4 years.. but I'd still expect a tsrom or tkrom board to be under 5 each.
-------------------------
If you have any GBA signage or kiosk I would be interested. Please send me a PM because I'm only here about once a month now but I'm still VERY interested in large system signage or small playable kiosks related to the GBA.