How many you say?

So I got 50 of them multi-color Dunlop Tortex guitar pics for $7.50. I always order enough to get the free shipping so that's not an issue.

Or, I could have gone on Amazon and bought a 12 pack of the same guitar pics for $6.99... FOH. 4 (12) packs is 48 pieces, for a grand total of $28..

It all comes from the same country of origin anyway, so whats the difference?