Don't know about the drugstores. But all the major players buy thir seeds from
the same groups of international seed producers. Many feed and seed stores buy
in bulk and can sell an oz o f seed ror about the same price as a packet of a
couple dozen seed. Plus you save the shipping and handling. In this area the
major prepackaged players are Burpee and Ferry Morse. Prices about the same
whether off the rack or mailorder, except for shipping and handling which can
be pricey. There a few stores that will keep old seed on the rack so look for
the "packaged for date"