I get my glyphs for free because I farmed all the mats myself; or so the argument goes.
Well, I suppose if you do not value your time at all, you might consider them free.
Me; well I place a value on my time. It's valuable. I don't really have that much time. Even when I do have time to spare, I want to be doing 'stuff' with it. I don't remember the last time I was stuck for 'something' to do. (Doctor's waiting rooms not withstanding; but even there I read blog posts).
When I go to work in real life each day, I don't earn a salary for free; I earn it with my time; skills and effort.
When I am levelling another alt, I am doing it to satisfy the collector on me. The collector in me had 2 hours of satisfaction in the last month. While he was levelling he was also gathering; performing (low level) valuable tasks. By gathering I increased my wealth. It did not mean those mats I got were free, merely a compensation for my time.
The same goes for herbalist/scribes. You are making value with herbalism. You could easily stop at the herbing and sell the mats. This sets a floor for the value of your herbs.
By milling your are also creating value. Your inks can be sold easily; lets call it 4g per ink for a quick sale of blackfallow, and 12g for a quick sale of inferno (and prices are still falling).
Now, you can decide to cross subsidize. If you manage to get better prices for your infernos (either by crafting cards yourself or simply from a higher sale price), then you have profit to be made. You could also cross subsidise your cards by doing dailies and using the profit from it to sell your cards 'cheap'. There is no difference. If you don't value your time, then it doesn't matter: Give your cards away - you have plenty of free time to make more.
As for me, my time has value. So do my herbs, glyphs, cards and inks.
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