Not true on both counts.
OS X can happily see Flash sites, it's iPhone OS that can't (Touch and iPad use this OS)
Google can read a lot of information from Flash sites, including, but not limited to
Text
Text loaded from XML files using action script
URL's & embedded links
Alt text information
swf2html is a tool that can be used to identify what google etc will be able to extract and read.
You can also add an HTML alternative if you want to, and undertake SEO on the underlying index.html page that launches the flash anyway loading this with the Meta components and some keyword heavy text for those users that do arrive without flash.
I've switched my site to Flash based, it cost £30 for the components and was done in an evening.
As for non flash users, they get a simple page with a sample image and a little link to the blog which will have more images on. I want people to view the images on the biggest screen possible as the site uses the whole screen and dynamically resizes the images.
Cheers Jason; that could be seen as a little aggressive but I'm fairly thick skinned.

Firstly I'll admit it was late and I included mac in the apple stuff that doesn't include flash, I was clearly wrong about that - But I wasn't 'wrong on both counts'. As you've agreed there are a lot of popular devices out there made by apple that don't support flash!
However, whilst it's true that Google does in fact claim to search xml files, that's just a technical fact. I don't claim to have used the swf2html tool, however the results below are
what Google actually has indexed, not what we think it should index:
The link below shows what google has got indexed from my cheap flash site (1 page indexed) and my very recent blog (2 pages indexed):
my results (slim)
Here's what google has indexed on your (very nice BTW) hand made flash site:
your results
And now a flash site that is bespoke probably at a fairly high price:
cool flash site
You'll notice that for the last site, there are 10 pages of results; that amount of searchable information comes from some serious work put into the site. I wouldn't have thought that was produced in an afternoon by a couple of part time developers.
As you're probably aware, Googling "weshootpeople" which is actually your URL doesn't even get your site on page 1 of Google's search results. :shake:
I'm not an expert but I believe just changing
www.blog/yourURL to
www.yourURL/blog will change your search results.
I'm also aware of the option of adding a mirror HTML site, but let's look at the original brief:
Cheap, easy to use flash site.
All the cheap and easy to use flash sites I'm aware of have very little HTML and adding a mirror site by hand could hardly be described as fitting within
"easy to use".
Expensive flash template sites automatically generate a HTML mirror site, but again, they're don't fall within the original brief
(cheap).
I'll finish here by stating that In no way did I pretend to be an expert at SEO! However I think it's fairly important so I'm trying to learn.
Back to my original answer, flashpalette templates are easy to use, you can try them out for free and they look good.
I'll throw into the mix:
If I had my time again, I'd not bother with a flash site at all and go straight to a blog with the Wordpress pro photo 3 template. Blogging is definitely the best way to get your site up the rankings - and you don't even have to lay it out like a blog, there a plenty of photographers who've switched to blog only - and that template is easy to use and looks great - it even allows a bit of flash too if you are really stuck on the idea.
