
Originally Posted by
Boswell
3) But ignoring the above, our main problem is with the holiday rental business: renting weeks, part weeks, discounts for more than one apartment (property is a ski chalet with 3 apartments, but with 7 variable renting combinations, extras for phone/fax, bicycle rental etc. All possible to tweak on a shopping cart, but easier just to knock off an invoice, dealing with the customer's numerous requirements. Customer then receives invoice (sent by email or attached PDF) and wishes to pay securely by credit card.
A link from an online invoice to a PSP would be the simplest solution, rather than getting involved in faxed/phoned/emailed credit card details. This is what we get with PayPal, but, as mentioned above, the downsides with PayPal are numerous.