Can't Buy Any Applications Because Google Accounts is poorly designed

Background:
I have a Droid on VZW.

My main Google account is a "Google Apps For Your Domain" (GAFYD) account. I have my Gmail, Calendar, etc. on this account. Unfortunately, GAFYD doesn't include Google Voice.

Following the Google recommended method, I set up a regular Google Account for Google Voice (see here: Using your Google Apps address with Google Voice - Google Voice Help) that has the same username (but remains a distinct account). I do not have Gmail on this account because that would create issues.

I set my phone up with my GAFYD account, as per this link: Android and G1 Forums, Mods, Hacks, News, Downloads, Skins, Themes, and more! | ModMyGphone - View Single Post - Primary Google Account in conjunction with Google Apps Account on Android Phone

Most functionality is there. In particular, Google Voice works with Gizmo and Sipdroid. However, there are some problems. Here's a thread discussing some of them:
Anyone else having issues with your Google Apps for Domains account on the Droid? - Google Mobile Help
1. Cannot buy paid apps in the market.
2. Unable to use my maps layer in maps app.
3. Cannot login to google finance app.

I want to solve problem #1 - Cannot buy paid apps in the market.

Many people are solving it by using another regular Gmail account. However, that's not working for me. I do have another regular Gmail account and I have been using it on my desktop computer for Check Out. However, Android on my Motorola Droid will not accept this account. I assume because it uses the same username as my GAFYD account (which is the way Google recommended doing it!). I have all my purchase history and credit card info in that account already. Creating YADGA ("yet another d*** Google account") is not an option.

Anyone else run into this?

 

Lots of people are running into this issue (as I see on the Google Groups). But I don't see any info about Google's plans to resolve the problems with accounts. The problems have been there for a long time, but Android really magnifies them.

Let's hope Google gets the message. Until then, I continue to look for better solutions to the account problems...