Thanks Digi, so it's essentialy as I thought. I'm basically restricted by what's currently available which is simply not good enough. Your workaround has merit from my point of view, but trying to explain in my listing what buyers need to do in order to achieve my own ends would be worse than pointless, given that most buyers don't even read listings in their entirety, and even if they do, much of the time they don't comprehend them anyway.

It can't be a difficult end to achieve as I've purchased from other sites which have precisely the feature I require, but I expect that eBay's software coders would be incapable of doing so even if they were required to. A pity, as it only requires the addition of an extra button labelled "Buy Another" plus the relevant code to make it work.

Never mind, I appreciate the verification that what I want is unachievable on eBay at this stage (and probably permanently) and I simply have to accept it, along with all the other shortcomings which are endemic to this site.