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Tested and working black ME F body with Digital Data M back on eBay --
Asahi Pentax ME F Black SLR w/Digital Data M Checked Working "Good" [3606062] 9786138601227 | eBay
It's from Japan, but the shipping is free. The Digital Data M is not rare, but a BLACK ME F is quite hard to find, especially in working condition.
The Buy It Now price is not cheap (but, I think fair), and there's a Make an Offer option available.