I buy both seeds and potted plants. Yes, potted plants are higher but I look for ones with lots of growth and either split them (like asparagus ferns) and they rebound nicely and then I have 2 for one, or I take cuttings and root them. Better for the potted plant and I grow the cuttings.
I learned a lot from Grandma. Seeds are .59/package so that’s ok. Pickling cucumbers grow on trellises so great and are so pretty. I use soil from year to year, mixed by myself from aged manure, eggshells, coffee grounds I save all year, and fertilizer.
I freshen it every year and use no herbicides or pesticides. Love my soil!