Capensis - I've found the lowes and home depots around here to be just about worthless. No peat at all, hit and miss on insecticides, and they only carry MiracleGro products. That's it. No cedar, no bark, nothing.
So - I've found a locally owned nursery that is much better. Carries peat - the real stuff, in different size packages, from 1 cubic foot on up. Perlite in all sorts of sizes. Long fiber sphagnum, and on and on. Also carries orchid bark, redwood, cedar bark and mulch, and several dozen other media.
Have you checked any of your local mom and pop nurseries? It's worth a shot. Call around and save drive time.