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I'm working on a custom board game and need a quote for 50 units. The box dimensions should be 19 cm x 10 cm x 8 cm. Each box will include 300 cards, an hourglass, a dice, and 60 plastic tokens (2 cm each, which I'll provide separately), along with an instruction pamphlet. Could you please share the estimated cost and lead time for production? Your assistance on this would be greatly appreciated.