Buying used Compression Drivers – What Condition is acceptable?

Some days ago, I bought a pair of used JBL 2447J compression drivers at a well known German selling platform. The seller rated the condition of the drivers as very good but showed only one photo in his sales advertisement:

Offered JBL 2447J

I contacted the seller and asked for more photos to show the condition. However, the seller refused, saying that the drivers were built into his setup and that the drivers would only be removed after the sale. However, he literally assured me that the drivers were in perfect original condition. In retrospect, I’m obviously annoyed with myself for not insisting on taking more photos, but so far I’ve had consistently good experiences. Until now…

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