Ok, right now in the download center is Market version 4.2 BETA.

This version contains the ability to connect with Authorize.Net in your choice of 3 different modes.  (SIM, DPM, and AIM)

Also included in this version is the ability to accept "non-paid" orders for those store owners who desire to process orders manually offline.

This download package is the third link down in the left column.  The green box currently still links to version 4.1 because this release is still considered a BETA version.

The reason we've labled this a BETA version, is because we have a few more tweaks coming, but didn't want to delay any longer.  

Everything seems to test out ok, but we're hoping to do a followup modification shortly that we'll label the full release.

To answer your second question first — no, not really. Market is actually a fully functional self-contained Wordpress theme. It's not a plugin, although it has parts that operate like a plugin would.

As far as setting up recurring payments, it doesn't have that ability to create recurring payments via CIM.

Yes, Market now allows for 3 different Authorize.net connection methods. (SIM, DPM, and AIM)

If you were going to run the card manually offline, in order to submit card numbers to you securely — you'd have to get your website setup with SSL capability. (https://)

Then, you'd simply have to change the link to the "offline" orderform from "http://" to "https://".

Market is certainly customizable. As far as ASCII language ability, to be honest I'm not sure what that would entail. I know ascii codes, but haven't heard of ascii language. If your question is whether strings of ascii characters can be used in place of actual wording, then the answer is yet. If it's something else, I'm not sue how to answer.

As far as API Naational, that is not one of the currenly built-in gateway formats. However, integration is certainly possible. Market is coded in PHP and so all you'll have to do is prepare the variable names and populate them to the correct format.

You won't lose any settings, but any pages that you've modified the code on would be lost, and would require re-working again. (including the e-junkie stuff and your footer code)

However, an included file "version.txt" documents the files changed, so you can generally evaluate if a file needs modifying.

Personally, if you're going to upgrade — I'd suggest holding off just a little longer, as the 4.2 BETA2 version is going to be changed to the 4.2 full release here in just a week or so. You might as well hold off and get the full version.

As far as the future goes in terms of digital products — we're going to be working on a system that allows for Market Theme to take care of all of it, so e-junkie will no longer be used.

Thanks for your input Eric.