I had a bad problem last year with snails too, which cost me a lot of money in lost seedlings, this year I bought all my seeds from the £1 shop, I thought this will be fine until I get more experienced.
I got 6 lots of veggies in one packet great value for money if they seed I thought, well so far all are looking terrific, sturdy, lovely colour, strong stems and good foliage.
Is this a one off as I have always read buy good quality seeds, or is cheap not necessarily bad:) or maybe I have been lucky? Thank you. Kind regards Linda Irvine.