Leave it to a (notional) Scot to start fingering his bawbees, but one thing I don't have a handle on is the cost of the buy-in. Is it one of those buy once/cry once affairs where after the outlay for durable goods (e.g. computer/monitor/printer etc.) the costs for replacing inksets/paper etc. is rather trivial? Or are you in a "use it or lose it" scenario where a person needs to be making a minimum number of prints per month, whatever the cost-per-print happens to be?

At any rate, a wonderful discussion...