The mistake was not repeated when THE EMPIRE STRIKES BACK made it's debut. Licensed products were ready and available before the movie even reached theaters. You can see some of the variety below. These pages were scanned from a catalogue from TKRP: The Best in the Galaxy, a mail order company based out of Michigan. I couldn't tell you what the TKRP stood for. I was on their mailing list for some time, so I must have bought something from them.
More to come tomorrow.