It costs me around 25.00 extra a month to run my lights etc. If you buy from the high street it will cost you 20.00 a bag that will probably last less than a week. So in terms of cost, it's more cost effective to grow your own than buy from the street even if you only yield a small plant that will give you 30g that's still 15 x 20 bags at 1.5 - 2g a bag. Either way you look at it, you will still get more for your buck growing your own than buying from the high street.
Also, don't look at growing it as a chore, grow it as a passion and a hobby and the time you put in won't matter. That's how I look at it. [emoji106]
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Auto Purple by OS
https://www.autoflower.org/index.php?threads/54433/
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Industrial Plant CBD Auto by DFem
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