Nope. Budgets (at least the base budgeting module in NS) is all dollar/currency based. I don't think quantity would end up being that straightforward even if you could get it because of returns, credits, etc. Basically, you probably want to be looking at total revenue/sales and your item gross margin rather than quantity sold anyway. I'd go back to said person and ask them why they're trying to budget on quantity. There's probably other metrics that would be better suited to getting them to the real thing they're trying to understand.