boomerbubba wrote:I'm not sure that analogy fits. In the case of that credit card purchase, the bank is financing the purchase, if only temporarily.
Yes, but that's not the issue I'm talking about. I'll just link to the
Wikipedia entry.
boomerbubba wrote:As I understand it, the costs associated with clearing electronic payments tend to be structured as per-transaction fees, and perhaps a setup fee. So it probably isn't free.
Exactly.
boomerbubba wrote:But then, I am not sure that when we drop off a plastic bag of paper checks at our local corrrespondent bank each week for immediate transmission to CHQ, that bank performs the service of counting and clearing the checks without any fees, either.
I think the church "pays" for it by keeping a minimum balance in the account. That's how it works for personal accounts. If that's the case, then the church gets 100% of the tithing donated and only "pays" in "lost opportunity" cost for the money placed in the account. (I concluded a long time ago that it was far more cost effective for my personal account to eat the lost opportunity costs then to pay the bank fees.)
boomerbubba wrote:On balance, I think businesses find that using electronic payments is cheaper for them than paper transactions.
Different situation. Many merchants subscribe to a check guarantee service to prevent accepting bad checks. The church doesn't do that. If the check bounces, they just cancel the blessing.

The church isn't out the cost of any merchandise.
As my link above shows, merchants DO pay for credit cards. They'd love to charge a surcharge for CC use, but the CC contract forbids that. They cope by either raising the price or depending on customers more willing to buy if they can use plastic. Neither situation works for the church. The "price" is set by scripture and the church isn't banking on "impulse purchase" to offset the costs. And as you note, labor costs are not an issue for the church.
And then there's the theological question of if the church only gets 99% of the tithing, has the tithing really been paid?
I really don't know the answer to why we don't having something in the US. But I wouldn't rule out the fee structure of the banking system. And on deeper thought, the issues behind creating a "secure store" are not trivial and could well mean that it's a resource issue. Out-sourcing that work would just lead us back to the fee structure issue.
It's interesting to note that you CAN donate on-line to the Humanitarian Aid
here.