Clickbank plus my own shopping cart?

It isn't considered wrong by ClickBank, at all, no. They're only a retailer: it isn't their business where else you choose to sell your product.

However, if you do this, you may well be saying goodbye to the prospect of (m)any serious, professional affiliates - this is the problem. And there are good reasons for that.

The 95% of ClickBank affiliates who collectively make about 5% of the affiliate-referred sales may not mind at all (or even notice), but most of the 5% of pro-affiliates who typically make about 95% of the sales may well move on smoothly to another product, if yours has an alternate sales page elsewhere.

The affiliates' problem here is that our prospective customer (with our Clickbank cookie on his PC), not having bought at his first visit to the sales page (which most don't, of course), can find the product again the following week via a Google search, which then takes him to the PaySpree/PDC/E-Junkie/vendor's-own/whatever sales-page, and our Clickbank cookie is no good to us there.

If the Clickbank sales-page is the only sales-page (as is usually the case, of course), we still get paid, even if the customer gets back to that page via Google. This is why vendors on Clickbank who have another sales page elsewhere, or another non-Clickbank way to pay, can attract only affiliates who haven't quite thought it through. Call me a judgmental skepchick but I would venture to suggest that those are perhaps not the affiliates whom many vendors would ideally wish to attract?

In other words: it will make a difference to some affiliates, but those will typically be the ones who make most of the affiliate-referred sales.

There's a kind of way round it, but it involves repackaging the product under another name (some vendors do this). This can work, but you can also get a few refund requests from people who've inadvertently bought it twice, and it might be less than ideal for "goodwill".

Great stuff Alexa. It is simple, complex but obvious. The affiliates do Not want you to bypass them so that they lose the sale and commissions. It therefore makes it difficult to spread your offer through multi networks or sales systems. I do not work that much with affiliates but will in the future.

Thanks for the info Alexa.