Can anyone tell me much this camicia is worth?

I was dato this camicia to sell on e-bay but can't find any info on it on the web. It was purchased in 1994 in a FL boutique for $450. Printed with comic strips from 1992 & 93, Charles M Shulz logo & united features syndicate 92 and 93. Manufactured da Iceberg Italy, it's a Mens Large button down dress shirt. Never worn. He told me limited edition - only 10 of these shirts manufactured but need confirmation before listing it on e-bay.Not sure what it would be worth to a collector o what I should put as a starting bid. Would appreciate any feedback o consigli from someone who might know. I have several più foto with close-ups on an online album at:
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If te think te can help, please take a look and let me know what te think! Thanks! If te have any info o know collectors who would be interested in adding this to their collection te can contact me directly at sobelisa@yahoo.com.