No. It would cost the same as tea, which is why it is not legal.The same as anything enjoyable - such as alcohol.
If it cost the same as tea then when you consider that €90 of tea is the equivalent of €520,000 of weed then how much weed, at current price would someone consume in a year? Lets be ultra generous and say €10k. So if it was legal you could supply someone with their annual supply for approximately €2