On December $28,2024,$ Tristar Communications sold $19$ units of its new satellite uplink system to various customers for $$35,000$ each. The terms of each sale were $\frac{1}{20},\frac{n}{30}.$ Tristar uses the net method to account for sales discounts.

In what year will income before tax be affected by discounts, assuming that all customers paid the net$-$of$-$discount amount on January $6,2025?$ By how much?