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Adding products and the ability to adjust qty's on Link2Pay would be a great enhancement. This would be a great go between for businesses looking to be able to sell a few items, but that do not need an ecommerce cart.
Ideally each item shows as a line item and the customer just adjusts the amount, it totals, and they enter their card at the bottom of the form.
I have many clients doing this currently where they set up a separate link2pay for each. IE click here for 1 ticket, click here for 2 tickets, etc.
This would be great for situations like a restaurant that wants to sell gift cards in different denominations, tickets to shows or events, selling a tshirts, sponsorship, different donation levels for non-profits, etc.