MrStinkyanswered grow question 3 years ago I have 2x NL at the moment.
At the beginning one was a mutant and I asked the guys if I should bin it off.
The answer I got was 'let it grow, mutants may surprise you and either way it is a growing experience and you will learn from it'.
That mutant plant is now a monster and I am very glad I kept it - if you check my current RQS NL diary it is the one on the left.
Based on that I would say always bear with them, they might surprise you. And if you dont get amazing results its another learning opportunity that has already cost you maybe 10 bucks.