Buying seeds in packs of ten or more drops the per seed price noticeably, but only makes sense if you plan to run the same strain repeatedly. Small three seed packs let you sample more genetics for the same money, at the cost of paying a premium per seed. Price per seed comparisons across pack sizes on https://potentthcseeds.com show that some vendors barely discount larger packs at all. For a first grow of a new strain, I would rather run three and decide later.