Not disputing the fact that have done and continue to offer high-end upgrade packages but the first question I always ask is 'what's your budget' followed by 'what are you looking to achieve'.
From there, I can tailor each build to the customer's specific requirements.
Side note, I have never built anything with solely Prommy internals
I always select each component based on its own merit with respect to the budget and performance targets.
I continually optimise the parts I use and offer based on their performance, price point and availability.
@Alex34 Turnaround is currently around 10 days if I have all the parts required in stock
That's been my biggest focus over the last decade closely followed by improving communication.