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On my website will be a product which I will be selling at say £9.99. Under that will be a PAYPAL buy now button, BUT if my customers agree to opt in to my mailing list then the price will change to say £4.99.
Basically I am trying to give them something cheap if they agree to be in my mailing list.
If the above makes sense then bid or if you have a better solution then advise. I am open to kinds of sensible suggestions.