Five questions and a few lines about your business. We send it to up to three vetted designers who work in your budget, and they come back to you directly.
You do not need to know the technical words. The things a designer needs to quote accurately are: what the business does and who the site is for; the few things the site must do (take enquiries, show prices, sell online, take bookings); what you already have (a logo, a domain name, an old site, photos); and any site you have seen and liked.
Budget is the one thing to be honest about. A designer who works at £500 and one who works at £5,000 will both do good work, but not for each other's clients. Picking a band gets you quotes you can act on.