(R7 should be 470 ohm not 10 k)
The whole thing would fit on a 19mmx19mm pcb.
To get it running a view lines of code in would have to be written for the uc.
Some more lines for the gui on a pc ...
If one would order 500 of the pcbs it would cost about 100 €, so about 0.20€ per circuit.
I have accesses to a rather powerful pcb-mill so for me it would be free to get a prototype.