Hi hirohawa,
I hope you won't mind me saying this, but you may need to re-think your asking price for this Marui kit.
Marui produced kits that were decent enough, but nowhere near the quality (both finish and materials) of kits offered by Marushin for example. I have both Marui and Marushin Walther P38 PFC models, the Marui really does come a very poor second to Marushin's model
Marushin offer Mauser M712 kits now at 10290 JPY (US$122.44 approx). Your asking price of US$295 is more than three times the realistic retail price for this kit. To have any chance of selling this, you'll need to reduce your price I'm sorry to say
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Cerwyn
Hobby collector of Replica model guns and Militaria.
also member of Living History Reenactment Groups.