A: Possibly. The value of the contracts matters, but E-1 substantial trade also looks for an ongoing flow of transactions over time. A few high value deals are stronger than one isolated transaction, but the company still needs to show continuing trade between the United States and the treaty country. The number, frequency, and value of the transactions all matter.
Sources: U.S. Department of State, Treaty Trader & Treaty Investor Visas: https://travel.state.gov/content/travel/en/us-visas/employment/treaty-trader-investor-visa-e.html
9 FAM 402.9, Treaty Traders and Treaty Investors: https://fam.state.gov/fam/09FAM/09FAM040209.html