There are a lot of people that will build you a website very cheaply, you could even do it yourself on a web builder site. But is that really what you want?
You could sort out the reception area to your offices, maybe your dad does a bit of DIY, chuck in some Ikea furniture, sorted. Is that what you really want?
Your reception is often the first a potential client will see of your company, what sort of impression will a cheaply thrown together reception have on them? Probably not the best and quite likely they'll walk out and you will never see them again.
It is no different with your website. It is increasingly the first, if not only, visual contact a client will have with your company. That first impression is everything, win or lose. Get it wrong and you will lose that business. The internet is a massive high street and you'll have to compete with a lot of other like businesses. It not enough to be on the first page of Google, you need to capture your audience. If your website doesn't look like you can offer what the client wants then there are a million more websites that they can check out.
If you thought that by getting an 'amazing deal' on your website will save you money, you are almost certainly wrong.