I have grown Sungold tomatoes every year for about the last ten years.
I always bought seed from Thompson & Morgan - indeed, I was originally
told that they were the only people you could get them from as it was
"their" variety.

I now see that this is incorrect - and you can buy from any number of
sources - (too late from this year - already bought T&M)

I have noticed that there is great variation in the prices - eg ten
seeds for 3 pounds or thirty seeds for three pounds.

My question is : is it worth paying more for such seeds or are the
cheaper ones fine?