Due to the fact that this product is made on customers demand, customers have no cancelation or refund rights by EU law. Sold B2B or B2C doesn't matter. There is just one date they have to met to stay within their contract: delivery within Q3.
You mean, Intel sells his CPUs coz theres a customers demand, so no EU law apply on Intel CPUs?
Dont forget, AT viper units are mass products.