I've been on the receiving money end of this kind of project several times in the past and as much as you try to help and guide, there's almost always an atmosphere of "I'm the one paying the invoice so let's just do as I say" even though everything points to them being absolutely wrong.
I've also been on projects like this where the buyer has a strong vision, is able to communicate it, but is also very hands off when it comes to implementation. With regular reporting (weekly or bi-weekly being ideal) to do course correcting they've gotten tremendous value out of the $100k-$300k spend.
To be fair, being a buyer for tech projects is really quite difficult – especially if you don't have a very clear and communicable vision of the end goal.
It’s $100-$300k to spend a year helping the client figure out what they want to build.
This is one aspect, and having a CEO/Founder with a Product Manager hat on is critical to cost-effectiveness (MVP, low fi design, phasing, derisking, etc.) I cringe every time I see a founder spend money on design before the MVP is figured out and before functionality exists.
But another is cycling thru multiple dev agencies, each of which exploit them in different ways (see my other comment here: https://news.ycombinator.com/item?id=34595540)
The other type, where they give you a lot of money to "do what we say", but don't have good ideas...they're unsatisfying. The work feels pointless because it's not going anywhere. It's weak on the resume, the client isn't ongoing after it fails, you usually don't get references out of it.
If you're short on money then the second type is fine, but you try to build toward only taking the first type of work. (I believe this applies to employment, too.)
The owners wanted something similar, but new looking - so really no added new functionality. Just a design do over, along with better hosting (the webpage was being hosted on the local server of the original designer, some retired dude in his 70s. If you wanted any changes, you'd have to call him and he'd apply changes to the HTML files).
Our cheapest option was a local student who'd charge us $3k for the job. But the owners wanted "24/7 support", so that went out the window.
Next in line, a local design shop quoted us around $7k. Still, no VIP support or whatever. And we'd still have to deal with hosting ourselves.
I had gotten a bunch of other quotes in the same ballpark, but the owner apparently knew a guy in one of the larger IT consulting firms, and they'd offer to do the job for a cool $20k (or around that ballpark), which came with 24/7 support and hosting for a around $2k / year. So they went for that.
Remember, this was just a simple landing page with a typical signup form, and a "modern design". Nothing more, nothing less. Total visitors a year? Probably under 1000.
I can only imagine the prices if they'd want some web app with user registration, login, tools, and what not. I can easily see some consulting firm charging hundreds of thousands for that kind of stuff.
Use real-time APIs to find the best price from: Travelocity, Hotels.com, Expedia One, Scott’s Cheap Flights, Priceline, Hotwire, Google Flights, Hertz, Kayak.
Sync up flights with hotels and rental cars.
Add 15% to everything, book and resell automatically, making it look like it all came from your app.
That 300K is all gone into the backend in a flash.