If I have a membership set at $10/month, then later I want to raise it to $19 month, can I just edit the product or should I create a new one and update the buy links? The reason I ask is because I wouldn't want the "old" customers to pay the price increase. They get to keep paying the original price. Will their billing through PayPal stay the same even if I edit the product and increase the price? Would a price change on a recurring product cause other issues I'm not aware of? Or is it just better to "copy" the product and create another one with the different price and a different negative price group? What's the best way to handle this?
I believe you find the answer to your question here: http://www.amember.com/forum/showthread.php?t=5683 and here: http://www.amember.com/forum/showthread.php?t=2642 I think you better create a new product (what is the old one but at a higher price).