unless you just etched your own board.

That's a good recommendation, especially since the board only needs to be one sided (As it appears that way to me)

EDIT: I realized it is a two sided design, still pretty simple if you use Fritzing

It will be slightly more expensive at first because you need to buy the copper board, acid, and put in time to make the design. But after you get it right you can crank them out pretty cheap, or even sell them to the community.

EDIT: What thickness do the boards have to be? These panelized boards generally only come in .064". It would be awfully convenient if the cartridge's PCB was that thickness, but I have no idea.

perhaps we can get a group of 16 that would want to go in together on them?

haha, i was typing out this suggestion, and you beat me to it

yeah, group buying is great. 

i'd be in for two of them if you do this @ that cost.  plus the shipping naturally on those.

i don't personally like their online quote thing, and they always have a real person contact you after the online thing is submitted anyways with the final quote.  which is usually adjusted somehow.  its like an unneeded extra step,

so, contact them directly.  if you're really wanting just the one...  batchpcb may work ok (then you can get one without meeting the minimum order amount or whatever).  but, ask gold phoenix directly, they have an office in canada too so should be awake and working now so you should get a quote sort of soon....

the cheaper alternative to you just having one made, would be to orchestrate a group buy.  just find out what the minimum order quantity is (it depends on the size of the PCB most times), and find that many people to go in on the order with you.  then you get it for much much cheaper, as does everyone else.  all it takes is someone to head it up and arrange shipping the PCBs out to the rest of the order.  that would be the cheapest way overall.  unless you just etched your own board.

i've wondered for a while why this scene never got on the group buying bandwagon.  it'd make so much sense

they can also handle those file types, or will have the software to convert into whatever they need if not.  just contact them directly and avoid their uploader-quote monstrosity

Does anyone know why it keeps rejecting them?

I was looking at using BatchPCB to get a board printed for $10-$20 USD, but their system doesn't seem to like the current way the Gerber files are exported. Anyone have any idea how to get them in the format/configuration they are looking for?

As per BatchPCB:
-Export your Gerbers in RS-274X format, with NC Drill format.
-Archive the gerber files in a .zip or .tgz.
-For simplicity, do not include any extraneous images or files. This may result in your upload being rejected, or the design failing the DRC.
-We render images for your gerbers immediately, but the DRC is a bit delayed. The time to check each board varies but is usually about a minute.